javascript - 导航栏 css html 下定位 slider 的问题

标签 javascript html css

我正在尝试使用 CSS 和 HTML 创建导航栏和 slider ，但是当我尝试将 slider 定位在导航栏下方时， slider 就消失了。我一直在努力解决这个问题，但我一直都失败了。所以我被困在这部分:

my problem

有没有一种方法可以将 slider 放在导航栏下方我已经尝试过 padding 但是 slider 只是消失了。

这是我的元素:

var slidesWrapper = $('.cd-hero-slider');

//check if a .cd-hero-slider exists in the DOM
if (slidesWrapper.length > 0) {

  var sliderNav = $('.cd-slider-nav');
  var slidesNumber = slidesWrapper.children('li').length;
  var visibleSlidePosition = 0;
  var autoPlayId;
  var autoPlayDelay = 5000;

  // autoplay slider
  setAutoplay(slidesWrapper, slidesNumber, autoPlayDelay);

  // change visible slide
  sliderNav.on('click', 'a', function(event) {
    event.preventDefault();

    var selectedItem = $(this);

    if (!selectedItem.hasClass('selected')) {

      // if it's not already selected
      var selectedPosition = selectedItem.index();
      var activePosition = slidesWrapper.find('li.selected').index();

      if (activePosition < selectedPosition) {
        nextSlide(slidesWrapper.find('.selected'), slidesWrapper, sliderNav, selectedPosition);
      } else {
        prevSlide(slidesWrapper.find('.selected'), slidesWrapper, sliderNav, selectedPosition);
      }

      //this is used for the autoplay
      visibleSlidePosition = selectedPosition;

      updateSliderNavigation(sliderNav, selectedPosition);
      setAutoplay(slidesWrapper, slidesNumber, autoPlayDelay);
    }
  });
}

function nextSlide(visibleSlide, container, pagination, n) {
  visibleSlide.removeClass('selected from-left from-right').addClass('is-moving').one('webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend', function() {
    visibleSlide.removeClass('is-moving');
  });

  container.children('li').eq(n).addClass('selected from-right').prevAll().addClass('move-left');
}

function prevSlide(visibleSlide, container, pagination, n) {
  visibleSlide.removeClass('selected from-left from-right').addClass('is-moving').one('webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend', function() {
    visibleSlide.removeClass('is-moving');
  });

  container.children('li').eq(n).addClass('selected from-left').removeClass('move-left').nextAll().removeClass('move-left');
}

function updateSliderNavigation(pagination, n) {
  var navigationDot = pagination.find('.selected');
  navigationDot.removeClass('selected');
  pagination.find('a').eq(n).addClass('selected');
}

// autoplay
function setAutoplay(wrapper, length, delay) {
  if (wrapper.hasClass('autoplay')) {
    clearInterval(autoPlayId);
    autoPlayId = window.setInterval(function() {
      autoplaySlider(length)
    }, delay);
  }
}

function autoplaySlider(length) {
  if (visibleSlidePosition < length - 1) {
    nextSlide(slidesWrapper.find('.selected'), slidesWrapper, sliderNav, visibleSlidePosition + 1);
    visibleSlidePosition += 1;
  } else {
    prevSlide(slidesWrapper.find('.selected'), slidesWrapper, sliderNav, 0);
    visibleSlidePosition = 0;
  }
  updateSliderNavigation(sliderNav, visibleSlidePosition);
}
*,
*::after,
*::before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
}

body {
  font-size: 1.6rem;
  font-family: "Open Sans", sans-serif;
  color: #2c343b;
  background-color: #f2f2f2;
}

a {
  color: #d44457;
  text-decoration: none;
}

img {
  max-width: 100%;
}

ul {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

.cd-hero {
  height: 300px;
  width: 100%;
  padding-left: 0px;
  padding-right: 0px;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: rgba(0, 0, 0, 0.03);
}

.cd-hero-slider {
  position: relative;
  height: 100%;
  overflow: hidden;
}

.cd-hero-slider li {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  -webkit-transform: translateX(100%);
  -moz-transform: translateX(100%);
  -ms-transform: translateX(100%);
  -o-transform: translateX(100%);
  transform: translateX(100%);
}

.cd-hero-slider li.selected {
  /* this is the visible slide */
  position: relative;
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  -ms-transform: translateX(0);
  -o-transform: translateX(0);
  transform: translateX(0);
}

.cd-hero-slider li.move-left {
  /* slide hidden on the left */
  -webkit-transform: translateX(-100%);
  -moz-transform: translateX(-100%);
  -ms-transform: translateX(-100%);
  -o-transform: translateX(-100%);
  transform: translateX(-100%);
}

.cd-hero-slider li.is-moving,
.cd-hero-slider li.selected {
  /* the is-moving class is assigned to the slide which is moving outside the viewport */
  -webkit-transition: -webkit-transform 0.5s;
  -moz-transition: -moz-transform 0.5s;
  transition: transform 0.5s;
}


/* --------------------------------

Single slide style

-------------------------------- */

.cd-hero-slider li {
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
}

.cd-hero-slider .cd-full-width,
.cd-hero-slider .cd-half-width {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 1;
  left: 0;
  top: 0;
  text-align: center;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transform: translateZ(0);
  -moz-transform: translateZ(0);
  -ms-transform: translateZ(0);
  -o-transform: translateZ(0);
  transform: translateZ(0);
}

.cd-hero-slider .cd-half-width {
  width: 45%;
}

.cd-hero-slider .cd-half-width:first-of-type {
  left: 5%;
}

.cd-hero-slider .cd-half-width:nth-of-type(2) {
  right: 5%;
  left: auto;
}

.cd-hero-slider .cd-content {
  position: relative;
  top: calc(50% - 30px);
  transform: translateY(-52%) !important;
  padding: 0 50px;
}


/*
    animations & transitions
*/

.cd-hero-slider .cd-half-width {
  opacity: 0;
  -webkit-transform: translateX(40px);
  -moz-transform: translateX(40px);
  -ms-transform: translateX(40px);
  -o-transform: translateX(40px);
  transform: translateX(40px);
}

.cd-hero-slider .move-left .cd-half-width {
  -webkit-transform: translateX(-40px);
  -moz-transform: translateX(-40px);
  -ms-transform: translateX(-40px);
  -o-transform: translateX(-40px);
  transform: translateX(-40px);
}

.cd-hero-slider .selected .cd-half-width {
  /* this is the visible slide */
  opacity: 1;
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  -ms-transform: translateX(0);
  -o-transform: translateX(0);
  transform: translateX(0);
}

.cd-hero-slider .is-moving .cd-half-width {
  /* this is the slide moving outside the viewport
    wait for the end of the transition on the <li> parent before set opacity to 0 and translate to 40px/-40px */
  -webkit-transition: opacity 0s 0.5s, -webkit-transform 0s 0.5s;
  -moz-transition: opacity 0s 0.5s, -moz-transform 0s 0.5s;
  transition: opacity 0s 0.5s, transform 0s 0.5s;
}

.cd-hero-slider li.selected.from-left .cd-half-width:nth-of-type(2),
.cd-hero-slider li.selected.from-right .cd-half-width:first-of-type {
  /* this is the selected slide - different animation if it's entering from left or right */
  -webkit-transition: opacity 0.4s 0.2s, -webkit-transform 0.5s 0.2s;
  -moz-transition: opacity 0.4s 0.2s, -moz-transform 0.5s 0.2s;
  transition: opacity 0.4s 0.2s, transform 0.5s 0.2s;
}

.cd-hero-slider li.selected.from-left .cd-half-width:first-of-type,
.cd-hero-slider li.selected.from-right .cd-half-width:nth-of-type(2) {
  /* this is the selected slide - different animation if it's entering from left or right */
  -webkit-transition: opacity 0.4s 0.4s, -webkit-transform 0.5s 0.4s;
  -moz-transition: opacity 0.4s 0.4s, -moz-transform 0.5s 0.4s;
  transition: opacity 0.4s 0.4s, transform 0.5s 0.4s;
}

.cd-hero-slider .cd-full-width h1,
.cd-hero-slider .cd-full-width h2,
.cd-hero-slider .cd-full-width h3,
.cd-hero-slider .cd-full-width h4,
.cd-hero-slider .cd-full-width h5,
.cd-hero-slider .cd-full-width h6,
.cd-hero-slider .cd-full-width p,
.cd-hero-slider .cd-full-width a,
.cd-hero-slider .cd-full-width .button {
  opacity: 0;
  -webkit-transform: translateX(100px);
  -moz-transform: translateX(100px);
  -ms-transform: translateX(100px);
  -o-transform: translateX(100px);
  transform: translateX(100px);
}

.cd-hero-slider .move-left .cd-full-width h1,
.cd-hero-slider .move-left .cd-full-width h2,
.cd-hero-slider .move-left .cd-full-width h3,
.cd-hero-slider .move-left .cd-full-width h4,
.cd-hero-slider .move-left .cd-full-width h5,
.cd-hero-slider .move-left .cd-full-width h6,
.cd-hero-slider .move-left .cd-full-width p,
.cd-hero-slider .move-left .cd-full-width .button {
  opacity: 0;
  -webkit-transform: translateX(-100px);
  -moz-transform: translateX(-100px);
  -ms-transform: translateX(-100px);
  -o-transform: translateX(-100px);
  transform: translateX(-100px);
}

.cd-hero-slider .selected .cd-full-width h1,
.cd-hero-slider .selected .cd-full-width h2,
.cd-hero-slider .selected .cd-full-width h3,
.cd-hero-slider .selected .cd-full-width h4,
.cd-hero-slider .selected .cd-full-width h5,
.cd-hero-slider .selected .cd-full-width h6,
.cd-hero-slider .selected .cd-full-width p,
.cd-hero-slider .selected .cd-full-width .button {
  /* this is the visible slide */
  opacity: 1;
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  -ms-transform: translateX(0);
  -o-transform: translateX(0);
  transform: translateX(0);
}

.cd-hero-slider li.is-moving .cd-full-width h1,
.cd-hero-slider li.is-moving .cd-full-width h2,
.cd-hero-slider li.is-moving .cd-full-width h3,
.cd-hero-slider li.is-moving .cd-full-width h4,
.cd-hero-slider li.is-moving .cd-full-width h5,
.cd-hero-slider li.is-moving .cd-full-width h6,
.cd-hero-slider li.is-moving .cd-full-width p,
.cd-hero-slider li.is-moving .cd-full-width .button {
  /* this is the slide moving outside the viewport
    wait for the end of the transition on the li parent before set opacity to 0 and translate to 100px/-100px */
  -webkit-transition: opacity 0s 0.5s, -webkit-transform 0s 0.5s;
  -moz-transition: opacity 0s 0.5s, -moz-transform 0s 0.5s;
  transition: opacity 0s 0.5s, transform 0s 0.5s;
}


/* different timings for different elements */

.cd-hero-slider li.selected h1,
.cd-hero-slider li.selected h2,
.cd-hero-slider li.selected h3,
.cd-hero-slider li.selected h4,
.cd-hero-slider li.selected h5,
.cd-hero-slider li.selected h6 {
  -webkit-transition: opacity 0.4s 0.2s, -webkit-transform 0.5s 0.2s;
  -moz-transition: opacity 0.4s 0.2s, -moz-transform 0.5s 0.2s;
  transition: opacity 0.4s 0.2s, transform 0.5s 0.2s;
}

.cd-hero-slider li.selected p {
  -webkit-transition: opacity 0.4s 0.3s, -webkit-transform 0.5s 0.3s;
  -moz-transition: opacity 0.4s 0.3s, -moz-transform 0.5s 0.3s;
  transition: opacity 0.4s 0.3s, transform 0.5s 0.3s;
}

.cd-hero-slider li.selected .button,
.cd-hero-slider li.selected input[type="button"],
.cd-hero-slider li.selected button {
  -webkit-transition: opacity 0.4s 0.4s, -webkit-transform 0.5s 0.4s, background-color 0.2s 0s;
  -moz-transition: opacity 0.4s 0.4s, -moz-transform 0.5s 0.4s, background-color 0.2s 0s;
  transition: opacity 0.4s 0.4s, transform 0.5s 0.4s, background-color 0.2s 0s;
}


/*
    slider navigation
*/

.cd-slider-nav {
  position: absolute;
  width: 100%;
  bottom: 0;
  z-index: 2;
  text-align: center;
  height: 30px;
}

.cd-slider-nav nav {
  display: inline-block;
  position: relative;
  height: 100%;
}

.cd-slider-nav a {
  display: inline-block;
  float: left;
  width: 15px;
  height: 15px;
  margin: 5px;
  border-radius: 50%;
  background-color: rgba(0, 0, 0, 0.2);
}

.cd-slider-nav a.selected {
  background-color: rgba(0, 0, 0, 0.5);
}


/* --------------------------------

Javascript disabled

-------------------------------- */

.no-js .cd-hero-slider li {
  display: none;
}

.no-js .cd-hero-slider li.selected {
  display: block;
}

.no-js .cd-slider-nav {
  display: none;
}

@import 'https://fonts.googleapis.com/css?family=Work+Sans:400,500,900';
body {
  margin: 0px 0px 0px 0px;
}

.nav2 {
  position: fixed;
  width: 100%;
  transition: top 0.2s ease-out;
}

.banner {
  text-align: center;
  width: 100%;
  box-shadow: inset 0px -1px 0px 0px rgba(0, 0, 0, 0.13);
}

.nav2 ul#menu {
  padding-left: 0;
  display: flex;
}

.nav2 .ul2 .li2 {
  flex-grow: 1;
}

.nav-bar {
  /* Rectangle 1: */
  background: #FFFFFF;
  box-shadow: 0px 2px 2px 0px rgba(0, 0, 0, 0.11), 0px 4px 6px 0px rgba(0, 0, 0, 0.11);
  width: 100%;
  text-align: center;
}

//-------------------------------------------------------

/*Strip the ul of padding and list styling*/

.ul2 {
  list-style-type: none;
  margin: 0;
  position: absolute;
}


/*Create a horizontal list with spacing*/

.li2 {
  display: inline-block;
  float: center;
}


/*Style for menu links*/

.li2 .a2 {
  display: block;
  min-width: 140px;
  height: 50px;
  text-align: center;
  line-height: 50px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: #fff;
  background: #2f3036;
  text-decoration: none;
}


/*Hover state for top level links*/

.li2:hover .a2 {
  background: #19c589;
}


/*Style for dropdown links*/

.li2:hover .ul2 .a2 {
  background: #f3f3f3;
  color: #2f3036;
  height: 40px;
  line-height: 40px;
}


/*Hover state for dropdown links*/

.li2:hover .ul2 .a2:hover {
  background: #19c589;
  color: #fff;
}


/*Hide dropdown links until they are needed*/

.li2 .ul2 {
  display: none;
}


/*Make dropdown links vertical*/

.li2 .ul2 .li2 {
  display: block;
  float: none;
}


/*Prevent text wrapping*/

.li2 .ul2 .li2 .a2 {
  width: auto;
  min-width: 100px;
}


/*Display the dropdown on hover*/

.ul2 .li2 .a2:hover+.hidden,
.hidden:hover {
  display: block;
}


/*Style 'show menu' label button and hide it by default*/

.show-menu {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  text-decoration: none;
  color: #fff;
  background: #19c589;
  text-align: center;
  padding-left: 0px;
  padding-right: 0px;
  display: none;
}


/*Hide checkbox*/

input[type=checkbox] {
  display: none;
}


/*Show menu when invisible checkbox is checked*/

input[type=checkbox]:checked~#menu {
  display: block;
}


/*Responsive Styles*/

@media screen and (max-width: 760px) {
  /*Make dropdown links appear inline*/
  .nav2 .ul2#menu {
    position: static;
    display: none;
  }
  /*Create vertical spacing*/
  .li2 {
    margin-bottom: 0px;
  }
  /*Make all menu links full width*/
  .ul2 .li2,
  .li2 .a2 {
    width: 100%;
  }
  /*Display 'show menu' link*/
  .show-menu {
    display: block;
  }
}

.hero-image {
  /* The image used */
  /* Set a specific height */
  height: 50%;
  width: 100%;
  /* Position and center the image to scale nicely on all screens */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
  vertical-align: top;
}

#menu {
  margin: 0;
}
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>slick slider</title>

  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">


  <link rel="stylesheet" href="css/style.css">


</head>

<body>

  <nav class="nav2">
    <div class="banner animated"><img class="hero-image" src="https://picsum.photos/1080/200/?random"></div>
    <div class="nav-bar"> <label for="show-menu" class="show-menu">Show Menu</label>
      <input type="checkbox" id="show-menu" role="button">
      <ul id="menu" class="ul2">
        <li class="li2"><a href="#" class="a2">Home</a></li>
        <li class="li2">
          <a href="#" class="a2">About</a>
        </li>
        <li class="li2">
          <a href="#" class="a2">Portfolio</a>
        </li>
        <li class="li2"><a href="#" class="a2">News</a></li>
        <li class="li2"><a href="#" class="a2">Contact</a></li>
      </ul>
    </div>
  </nav>
  <section class="cd-hero">

    <ul class="cd-hero-slider autoplay">

      <li class="selected" style="background-color:#3498db">
        <div class="cd-full-width">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>
      </li>

      <li style="background-color:#34495e">
        <div class="cd-half-width">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>

        <div class="cd-half-width cd-img-container">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>
      </li>

      <li style="background-color:#e67e22">
        <div class="cd-half-width cd-img-container">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>

        <div class="cd-half-width">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>
      </li>

      <li style="background-color:#2ecc71">
        <div class="cd-full-width">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>
      </li>

      <li style="background-color:#9b59b6">
        <div class="cd-full-width">
          <div class="cd-content">
            <h2>slide content</h2>
            <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Aut autem commodi corporis, dignissimos dolorem doloremque eveniet explicabo minima, nihil pariatur, porro possimus rem voluptatem? A dignissimos inventore necessitatibus vel veritatis.</p>
          </div>
        </div>
      </li>


    </ul>

    <div class="cd-slider-nav">

      <!--<span class="cd-marker"></span>-->
      <nav>
        <a href="#0" class="selected"></a>
        <a href="#0"></a>
        <a href="#0"></a>
        <a href="#0"></a>
        <a href="#0"></a>
      </nav>
    </div>
    <!-- .cd-slider-nav -->
  </section>
  <script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>



  <script src="js/index.js"></script>




</body>

</html>

我使用填充时的问题:

enter image description here

从 still 中删除行 position: fixed; 不起作用，因为它会导致:

enter image description here

最佳答案

快速修复。从 nav2 类中删除固定位置。

.nav2 {
  position: fixed; /* remove this line */
  width: 100%;
  transition: top 0.2s ease-out;
}

我不确定移除 position fixed 后网页的外观是否是您要查找的内容，但移除确实会将 slider 定位在导航栏下方。无论如何，这就是您所要求的，因此这是我的解决方案。

Jsfiddle 

var slidesWrapper = $('.cd-hero-slider');

//check if a .cd-hero-slider exists in the DOM
if (slidesWrapper.length > 0) {

  var sliderNav = $('.cd-slider-nav');
  var slidesNumber = slidesWrapper.children('li').length;
  var visibleSlidePosition = 0;
  var autoPlayId;
  var autoPlayDelay = 5000;

  // autoplay slider
  setAutoplay(slidesWrapper, slidesNumber, autoPlayDelay);

  // change visible slide
  sliderNav.on('click', 'a', function(event) {
    event.preventDefault();

    var selectedItem = $(this);

    if (!selectedItem.hasClass('selected')) {

      // if it's not already selected
      var selectedPosition = selectedItem.index();
      var activePosition = slidesWrapper.find('li.selected').index();

      if (activePosition < selectedPosition) {
        nextSlide(slidesWrapper.find('.selected'), slidesWrapper, sliderNav, selectedPosition);
      } else {
        prevSlide(slidesWrapper.find('.selected'), slidesWrapper, sliderNav, selectedPosition);
      }

      //this is used for the autoplay
      visibleSlidePosition = selectedPosition;

      updateSliderNavigation(sliderNav, selectedPosition);
      setAutoplay(slidesWrapper, slidesNumber, autoPlayDelay);
    }
  });
}

function nextSlide(visibleSlide, container, pagination, n) {
  visibleSlide.removeClass('selected from-left from-right').addClass('is-moving').one('webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend', function() {
    visibleSlide.removeClass('is-moving');
  });

  container.children('li').eq(n).addClass('selected from-right').prevAll().addClass('move-left');
}

function prevSlide(visibleSlide, container, pagination, n) {
  visibleSlide.removeClass('selected from-left from-right').addClass('is-moving').one('webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend', function() {
    visibleSlide.removeClass('is-moving');
  });

  container.children('li').eq(n).addClass('selected from-left').removeClass('move-left').nextAll().removeClass('move-left');
}

function updateSliderNavigation(pagination, n) {
  var navigationDot = pagination.find('.selected');
  navigationDot.removeClass('selected');
  pagination.find('a').eq(n).addClass('selected');
}

// autoplay
function setAutoplay(wrapper, length, delay) {
  if (wrapper.hasClass('autoplay')) {
    clearInterval(autoPlayId);
    autoPlayId = window.setInterval(function() {
      autoplaySlider(length)
    }, delay);
  }
}

function autoplaySlider(length) {
  if (visibleSlidePosition < length - 1) {
    nextSlide(slidesWrapper.find('.selected'), slidesWrapper, sliderNav, visibleSlidePosition + 1);
    visibleSlidePosition += 1;
  } else {
    prevSlide(slidesWrapper.find('.selected'), slidesWrapper, sliderNav, 0);
    visibleSlidePosition = 0;
  }
  updateSliderNavigation(sliderNav, visibleSlidePosition);
}
*,
*::after,
*::before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
}

body {
  font-size: 1.6rem;
  font-family: "Open Sans", sans-serif;
  color: #2c343b;
  background-color: #f2f2f2;
}

a {
  color: #d44457;
  text-decoration: none;
}

img {
  max-width: 100%;
}

ul {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

.cd-hero {
  height: 300px;
  width: 100%;
  padding-left: 0px;
  padding-right: 0px;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: rgba(0, 0, 0, 0.03);
}

.cd-hero-slider {
  position: relative;
  height: 100%;
  overflow: hidden;
}

.cd-hero-slider li {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  -webkit-transform: translateX(100%);
  -moz-transform: translateX(100%);
  -ms-transform: translateX(100%);
  -o-transform: translateX(100%);
  transform: translateX(100%);
}

.cd-hero-slider li.selected {
  /* this is the visible slide */
  position: relative;
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  -ms-transform: translateX(0);
  -o-transform: translateX(0);
  transform: translateX(0);
}

.cd-hero-slider li.move-left {
  /* slide hidden on the left */
  -webkit-transform: translateX(-100%);
  -moz-transform: translateX(-100%);
  -ms-transform: translateX(-100%);
  -o-transform: translateX(-100%);
  transform: translateX(-100%);
}

.cd-hero-slider li.is-moving,
.cd-hero-slider li.selected {
  /* the is-moving class is assigned to the slide which is moving outside the viewport */
  -webkit-transition: -webkit-transform 0.5s;
  -moz-transition: -moz-transform 0.5s;
  transition: transform 0.5s;
}


/* --------------------------------

Single slide style

-------------------------------- */

.cd-hero-slider li {
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
}

.cd-hero-slider .cd-full-width,
.cd-hero-slider .cd-half-width {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 1;
  left: 0;
  top: 0;
  text-align: center;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transform: translateZ(0);
  -moz-transform: translateZ(0);
  -ms-transform: translateZ(0);
  -o-transform: translateZ(0);
  transform: translateZ(0);
}

.cd-hero-slider .cd-half-width {
  width: 45%;
}

.cd-hero-slider .cd-half-width:first-of-type {
  left: 5%;
}

.cd-hero-slider .cd-half-width:nth-of-type(2) {
  right: 5%;
  left: auto;
}

.cd-hero-slider .cd-content {
  position: relative;
  top: calc(50% - 30px);
  transform: translateY(-52%) !important;
  padding: 0 50px;
}


/*
    animations & transitions
*/

.cd-hero-slider .cd-half-width {
  opacity: 0;
  -webkit-transform: translateX(40px);
  -moz-transform: translateX(40px);
  -ms-transform: translateX(40px);
  -o-transform: translateX(40px);
  transform: translateX(40px);
}

.cd-hero-slider .move-left .cd-half-width {
  -webkit-transform: translateX(-40px);
  -moz-transform: translateX(-40px);
  -ms-transform: translateX(-40px);
  -o-transform: translateX(-40px);
  transform: translateX(-40px);
}

.cd-hero-slider .selected .cd-half-width {
  /* this is the visible slide */
  opacity: 1;
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  -ms-transform: translateX(0);
  -o-transform: translateX(0);
  transform: translateX(0);
}

.cd-hero-slider .is-moving .cd-half-width {
  /* this is the slide moving outside the viewport
    wait for the end of the transition on the <li> parent before set opacity to 0 and translate to 40px/-40px */
  -webkit-transition: opacity 0s 0.5s, -webkit-transform 0s 0.5s;
  -moz-transition: opacity 0s 0.5s, -moz-transform 0s 0.5s;
  transition: opacity 0s 0.5s, transform 0s 0.5s;
}

.cd-hero-slider li.selected.from-left .cd-half-width:nth-of-type(2),
.cd-hero-slider li.selected.from-right .cd-half-width:first-of-type {
  /* this is the selected slide - different animation if it's entering from left or right */
  -webkit-transition: opacity 0.4s 0.2s, -webkit-transform 0.5s 0.2s;
  -moz-transition: opacity 0.4s 0.2s, -moz-transform 0.5s 0.2s;
  transition: opacity 0.4s 0.2s, transform 0.5s 0.2s;
}

.cd-hero-slider li.selected.from-left .cd-half-width:first-of-type,
.cd-hero-slider li.selected.from-right .cd-half-width:nth-of-type(2) {
  /* this is the selected slide - different animation if it's entering from left or right */
  -webkit-transition: opacity 0.4s 0.4s, -webkit-transform 0.5s 0.4s;
  -moz-transition: opacity 0.4s 0.4s, -moz-transform 0.5s 0.4s;
  transition: opacity 0.4s 0.4s, transform 0.5s 0.4s;
}

.cd-hero-slider .cd-full-width h1,
.cd-hero-slider .cd-full-width h2,
.cd-hero-slider .cd-full-width h3,
.cd-hero-slider .cd-full-width h4,
.cd-hero-slider .cd-full-width h5,
.cd-hero-slider .cd-full-width h6,
.cd-hero-slider .cd-full-width p,
.cd-hero-slider .cd-full-width a,
.cd-hero-slider .cd-full-width .button {
  opacity: 0;
  -webkit-transform: translateX(100px);
  -moz-transform: translateX(100px);
  -ms-transform: translateX(100px);
  -o-transform: translateX(100px);
  transform: translateX(100px);
}

.cd-hero-slider .move-left .cd-full-width h1,
.cd-hero-slider .move-left .cd-full-width h2,
.cd-hero-slider .move-left .cd-full-width h3,
.cd-hero-slider .move-left .cd-full-width h4,
.cd-hero-slider .move-left .cd-full-width h5,
.cd-hero-slider .move-left .cd-full-width h6,
.cd-hero-slider .move-left .cd-full-width p,
.cd-hero-slider .move-left .cd-full-width .button {
  opacity: 0;
  -webkit-transform: translateX(-100px);
  -moz-transform: translateX(-100px);
  -ms-transform: translateX(-100px);
  -o-transform: translateX(-100px);
  transform: translateX(-100px);
}

.cd-hero-slider .selected .cd-full-width h1,
.cd-hero-slider .selected .cd-full-width h2,
.cd-hero-slider .selected .cd-full-width h3,
.cd-hero-slider .selected .cd-full-width h4,
.cd-hero-slider .selected .cd-full-width h5,
.cd-hero-slider .selected .cd-full-width h6,
.cd-hero-slider .selected .cd-full-width p,
.cd-hero-slider .selected .cd-full-width .button {
  /* this is the visible slide */
  opacity: 1;
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  -ms-transform: translateX(0);
  -o-transform: translateX(0);
  transform: translateX(0);
}

.cd-hero-slider li.is-moving .cd-full-width h1,
.cd-hero-slider li.is-moving .cd-full-width h2,
.cd-hero-slider li.is-moving .cd-full-width h3,
.cd-hero-slider li.is-moving .cd-full-width h4,
.cd-hero-slider li.is-moving .cd-full-width h5,
.cd-hero-slider li.is-moving .cd-full-width h6,
.cd-hero-slider li.is-moving .cd-full-width p,
.cd-hero-slider li.is-moving .cd-full-width .button {
  /* this is the slide moving outside the viewport
    wait for the end of the transition on the li parent before set opacity to 0 and translate to 100px/-100px */
  -webkit-transition: opacity 0s 0.5s, -webkit-transform 0s 0.5s;
  -moz-transition: opacity 0s 0.5s, -moz-transform 0s 0.5s;
  transition: opacity 0s 0.5s, transform 0s 0.5s;
}


/* different timings for different elements */

.cd-hero-slider li.selected h1,
.cd-hero-slider li.selected h2,
.cd-hero-slider li.selected h3,
.cd-hero-slider li.selected h4,
.cd-hero-slider li.selected h5,
.cd-hero-slider li.selected h6 {
  -webkit-transition: opacity 0.4s 0.2s, -webkit-transform 0.5s 0.2s;
  -moz-transition: opacity 0.4s 0.2s, -moz-transform 0.5s 0.2s;
  transition: opacity 0.4s 0.2s, transform 0.5s 0.2s;
}

.cd-hero-slider li.selected p {
  -webkit-transition: opacity 0.4s 0.3s, -webkit-transform 0.5s 0.3s;
  -moz-transition: opacity 0.4s 0.3s, -moz-transform 0.5s 0.3s;
  transition: opacity 0.4s 0.3s, transform 0.5s 0.3s;
}

.cd-hero-slider li.selected .button,
.cd-hero-slider li.selected input[type="button"],
.cd-hero-slider li.selected button {
  -webkit-transition: opacity 0.4s 0.4s, -webkit-transform 0.5s 0.4s, background-color 0.2s 0s;
  -moz-transition: opacity 0.4s 0.4s, -moz-transform 0.5s 0.4s, background-color 0.2s 0s;
  transition: opacity 0.4s 0.4s, transform 0.5s 0.4s, background-color 0.2s 0s;
}


/*
    slider navigation
*/

.cd-slider-nav {
  position: absolute;
  width: 100%;
  bottom: 0;
  z-index: 2;
  text-align: center;
  height: 30px;
}

.cd-slider-nav nav {
  display: inline-block;
  position: relative;
  height: 100%;
}

.cd-slider-nav a {
  display: inline-block;
  float: left;
  width: 15px;
  height: 15px;
  margin: 5px;
  border-radius: 50%;
  background-color: rgba(0, 0, 0, 0.2);
}

.cd-slider-nav a.selected {
  background-color: rgba(0, 0, 0, 0.5);
}


/* --------------------------------

Javascript disabled

-------------------------------- */

.no-js .cd-hero-slider li {
  display: none;
}

.no-js .cd-hero-slider li.selected {
  display: block;
}

.no-js .cd-slider-nav {
  display: none;
}

@import 'https://fonts.googleapis.com/css?family=Work+Sans:400,500,900';
body {
  margin: 0px 0px 0px 0px;
}

.nav2 {
  width: 100%;
  transition: top 0.2s ease-out;
}

.banner {
  text-align: center;
  width: 100%;
  box-shadow: inset 0px -1px 0px 0px rgba(0, 0, 0, 0.13);
}

.nav2 ul#menu {
  padding-left: 0;
  display: flex;
}

.nav2 .ul2 .li2 {
  flex-grow: 1;
}

.nav-bar {
  /* Rectangle 1: */
  background: #FFFFFF;
  box-shadow: 0px 2px 2px 0px rgba(0, 0, 0, 0.11), 0px 4px 6px 0px rgba(0, 0, 0, 0.11);
  width: 100%;
  text-align: center;
}

//-------------------------------------------------------

/*Strip the ul of padding and list styling*/

.ul2 {
  list-style-type: none;
  margin: 0;
  position: absolute;
}


/*Create a horizontal list with spacing*/

.li2 {
  display: inline-block;
  float: center;
}


/*Style for menu links*/

.li2 .a2 {
  display: block;
  min-width: 140px;
  height: 50px;
  text-align: center;
  line-height: 50px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: #fff;
  background: #2f3036;
  text-decoration: none;
}


/*Hover state for top level links*/

.li2:hover .a2 {
  background: #19c589;
}


/*Style for dropdown links*/

.li2:hover .ul2 .a2 {
  background: #f3f3f3;
  color: #2f3036;
  height: 40px;
  line-height: 40px;
}


/*Hover state for dropdown links*/

.li2:hover .ul2 .a2:hover {
  background: #19c589;
  color: #fff;
}


/*Hide dropdown links until they are needed*/

.li2 .ul2 {
  display: none;
}


/*Make dropdown links vertical*/

.li2 .ul2 .li2 {
  display: block;
  float: none;
}


/*Prevent text wrapping*/

.li2 .ul2 .li2 .a2 {
  width: auto;
  min-width: 100px;
}


/*Display the dropdown on hover*/

.ul2 .li2 .a2:hover+.hidden,
.hidden:hover {
  display: block;
}


/*Style 'show menu' label button and hide it by default*/

.show-menu {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  text-decoration: none;
  color: #fff;
  background: #19c589;
  text-align: center;
  padding-left: 0px;
  padding-right: 0px;
  display: none;
}


/*Hide checkbox*/

input[type=checkbox] {
  display: none;
}


/*Show menu when invisible checkbox is checked*/

input[type=checkbox]:checked~#menu {
  display: block;
}


/*Responsive Styles*/

@media screen and (max-width: 760px) {
  /*Make dropdown links appear inline*/
  .nav2 .ul2#menu {
    position: static;
    display: none;
  }
  /*Create vertical spacing*/
  .li2 {
    margin-bottom: 0px;
  }
  /*Make all menu links full width*/
  .ul2 .li2,
  .li2 .a2 {
    width: 100%;
  }
  /*Display 'show menu' link*/
  .show-menu {
    display: block;
  }
}

.hero-image {
  /* The image used */
  /* Set a specific height */
  height: 50%;
  width: 100%;
  /* Position and center the image to scale nicely on all screens */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
  vertical-align: top;
}

#menu {
  margin: 0;
}
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>slick slider</title>

  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">


  <link rel="stylesheet" href="css/style.css">


</head>

<body>

  <nav class="nav2">
    <div class="banner animated"><img class="hero-image" src="https://picsum.photos/1080/200/?random"></div>
    <div class="nav-bar"> <label for="show-menu" class="show-menu">Show Menu</label>
      <input type="checkbox" id="show-menu" role="button">
      <ul id="menu" class="ul2">
        <li class="li2"><a href="#" class="a2">Home</a></li>
        <li class="li2">
          <a href="#" class="a2">About</a>
        </li>
        <li class="li2">
          <a href="#" class="a2">Portfolio</a>
        </li>
        <li class="li2"><a href="#" class="a2">News</a></li>
        <li class="li2"><a href="#" class="a2">Contact</a></li>
      </ul>
    </div>
  </nav>
  <section class="cd-hero">

    <ul class="cd-hero-slider autoplay">

      <li class="selected" style="background-color:#3498db">
        <div class="cd-full-width">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>
      </li>

      <li style="background-color:#34495e">
        <div class="cd-half-width">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>

        <div class="cd-half-width cd-img-container">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>
      </li>

      <li style="background-color:#e67e22">
        <div class="cd-half-width cd-img-container">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>

        <div class="cd-half-width">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>
      </li>

      <li style="background-color:#2ecc71">
        <div class="cd-full-width">
          <div class="cd-content">
            <h2>slide content</h2>
          </div>
        </div>
      </li>

      <li style="background-color:#9b59b6">
        <div class="cd-full-width">
          <div class="cd-content">
            <h2>slide content</h2>
            <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Aut autem commodi corporis, dignissimos dolorem doloremque eveniet explicabo minima, nihil pariatur, porro possimus rem voluptatem? A dignissimos inventore necessitatibus vel veritatis.</p>
          </div>
        </div>
      </li>


    </ul>

    <div class="cd-slider-nav">

      <!--<span class="cd-marker"></span>-->
      <nav>
        <a href="#0" class="selected"></a>
        <a href="#0"></a>
        <a href="#0"></a>
        <a href="#0"></a>
        <a href="#0"></a>
      </nav>
    </div>
    <!-- .cd-slider-nav -->
  </section>
  <script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>



  <script src="js/index.js"></script>




</body>

</html>

关于javascript - 导航栏 css html 下定位 slider 的问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50896190/

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