我想在我的页面顶部创建一个导航栏，无论您以何种方式滚动，它都会跟随。 我创建了它，然后在其下创建了一个幻灯片。问题是，与我的幻灯片相关的所有内容都会中断导航栏，当它滚动浏览时，它们会重叠。我不知道如何解决这个问题，希望得到一些帮助:)
CSS
/* HEADER - HEADER - HEADER */
/* Style the header */
.header {
background-color: lightgray;
padding: 20px;
text-align: center;
}
/* Style the top navigation bar */
.menu_navigation {
position: fixed;
overflow: hidden;
background-color: #333;
top: 0;
width: 100%;
}
/* Style the topnav links */
.menu_navigation a {
float: left;
display: block;
color: #f2f2f2;
text-align: center;
padding: 15px 25px;
text-decoration: none;
}
/* Change color on hover */
.menu_navigation a:hover {
background-color: rgb(0, 162, 255);
color: black;
}
/* Create three equal columns that floats next to each other */
.column {
float: left;
width: 33.33%;
padding: 10px;
}
/* Clear floats after the columns */
.row:after {
content: "";
display: table;
clear: both;
}
/* Responsive layout - makes the three columns stack on top of each other instead of next to each other */
@media screen and (max-width:600px) {}
.column {
width: 100%;
}
* {box-sizing: border-box}
body {font-family: Verdana, sans-serif; margin:0}
.mySlides {display: none}
img {
vertical-align: auto;
position: relative;
top: 52px;
}
#billede1, #billede2, #billede3 {
filter: blur(8px);
}
/* Slideshow container */
.slideshow-container {
width: 1500;
}
/* Next & previous buttons */
.prev, .next {
position: absolute;
top: 50%;
width: auto;
padding: 16px;
margin-top: -22px;
color: white;
transition: 0.6s ease;
}
/* Position the "next button" to the right */
.next {
right: 0;
border-radius: 3px 0 0 3px;
}
/* On hover, add a black background color with a little bit see-through */
.prev:hover, .next:hover {
background-color: rgba(0,0,0,0.8);
}
/* Caption text */
.text {
color: #000000;
font-size: 30px;
padding: 8px 12px;
position: absolute;
bottom: -1200px;
width: 100%;
text-align: center;
}
/* Number text (1/3 etc) */
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}
/* The dots/bullets/indicators */
.dot {
cursor: pointer;
height: 15px;
width: 15px;
margin: 0 2px;
background-color: #bbb;
border-radius: 50%;
display: inline-block;
transition: background-color 0.6s ease;
}
.active, .dot:hover {
background-color: #717171;
}
/* Fading animation */
.fade {
-webkit-animation-name: fade;
-webkit-animation-duration: 1.5s;
animation-name: fade;
animation-duration: 1.5s;
}
@-webkit-keyframes fade {
from {opacity: .4}
to {opacity: 1}
}
@keyframes fade {
from {opacity: .4}
to {opacity: 1}
}
/* On smaller screens, decrease text size */
@media only screen and (max-width: 300px) {
.prev, .next,.text {font-size: 11px}
}
.footer {
background-color:blue;
text-align: center;
padding: 10px;
}
html
<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="style.css">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<body>
<div class="menu_navigation">
<a href="#">Men</a>
<a href="#">Women</a>
<a href="#">Children</a>
<a href="#">About Us</a>
<a href="#">News</a>
</div>
<!-- Slideshow, for under navigationsbaren-->
<div class="slideshow-container">
<div class="mySlides fade">
<div class="numbertext">1 / 3</div>
<img src="C:\Users\Wahab\Desktop\hjemmesidenprojekt\billeder\1.jpg" id="billede1" style="width:100%" height="1000px">
<div class="text">Skjorte - 150 kr</div>
</div>
<div class="mySlides fade">
<div class="numbertext">2 / 3</div>
<img src="C:\Users\Wahab\Desktop\hjemmesidenprojekt\billeder\2.jpg" id="billede2" style="width:100%" height="1000px">
<div class="text">Mørke blå Chino bukser - 540 kr</div>
</div>
<div class="mySlides fade">
<div class="numbertext">3 / 3</div>
<img src="C:\Users\Wahab\Desktop\hjemmesidenprojekt\billeder\3.jpg" id="billede3" style="width:100%" height="1000px">
<div class="text">Hvide Chinos - 430 kr</div>
</div>
<a class="prev" onclick="plusSlides(-1)">❮</a>
<a class="next" onclick="plusSlides(1)">❯</a>
</div>
<br>
<div style="text-align:center">
<span class="dot" onclick="currentSlide(1)"></span>
<span class="dot" onclick="currentSlide(2)"></span>
<span class="dot" onclick="currentSlide(3)"></span>
</div>
<script>
var slideIndex = 1;
showSlides(slideIndex);
function plusSlides(n) {
showSlides(slideIndex += n);
}
function currentSlide(n) {
showSlides(slideIndex = n);
}
function showSlides(n) {
var i;
var slides = document.getElementsByClassName("mySlides");
var dots = document.getElementsByClassName("dot");
if (n > slides.length) {slideIndex = 1}
if (n < 1) {slideIndex = slides.length}
for (i = 0; i < slides.length; i++) {
slides[i].style.display = "none";
}
for (i = 0; i < dots.length; i++) {
dots[i].className = dots[i].className.replace(" active", "");
}
slides[slideIndex-1].style.display = "block";
dots[slideIndex-1].className += " active";
}
</script>
</body>
</html>
最佳答案
您需要将导航栏的 z-index 设置为高于任何元素的任何其他 z-index。
z-index 提供了元素相互堆叠时的层次结构。
关于html - 与导航栏无关的一切，重叠并打断它，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59221478/