html - 滚动条上的导航栏高度

标签 html css flexbox

我正在用 Angular 6 创建一个简单的导航，我使用 bem 方法和 flexbox 用于 css。

这是导航标记:

<div class="main-header">
  <nav class="main-nav" ng-sticky [offSet]="0" [addClass]="'main-sticky'" appMainNav #ref="appMainNav">
    <div class="main-nav__logo " ng-sticky [offSet]="0" [addClass]="'main-sticky__logo'">
      <img class="man-nav__logo-green" src="/assets/images/logo-white.png">
    </div>
    <div class="main-nav__toggle">
      <i class="main-nav__bars fa fa-bars" ng-sticky [offSet]="0" [addClass]="'main-bars'"></i>
    </div>
    <ul class="main-nav__list " ng-sticky [addClass]="'main-sticky-link'" [ngClass]="ref.click === true? 'Navbar__ToggleShow' :''">
      <li class="main-nav__item">
        <a class="main-nav__link" href="#">Home</a>
      </li>
      <li class="main-nav__item">
        <a class="main-nav__link" href="#">About us</a>
      </li>
      <li class="main-nav__item">
        <a class="main-nav__link" href="#">What we do</a>
      </li>
      <li class="main-nav__item">
        <a class="main-nav__link " href="#">Projects</a>
      </li>
      <li class="main-nav__item">
        <a class="main-nav__link " href="#">Contact</a>
      </li>
    </ul>
  </nav>

  <div class="main-banner">
    <h2>We are a team of
      <strong>experts</strong>.</h2>
    <p>Founded in 2014, the BDTS Poland specializes in IT personnel outsourcing for the areas of banking, insurance, telecommunications,
      high-tech, pharmacy, logistics and many others</p>
    <a href="http://en.astek.pl/about-us/" class="main-banner__green-button main-banner__arrow-right">Read more
      <i></i>
    </a>
    <a href="#" class="main-banner__arrow-down"></a>
  </div>
</div>

这是导航栏的移动 CSS:

@media only screen and(max-width: 768px) {
  .main-nav {
    margin: 0;
    display: block;
    position: inherit;
    height: auto;
    overflow: auto;
    background: white;
  }
  .main-nav__list {
    margin-top: 20px;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .main-nav__item:after {
    content: '';
    width: 1px;
  }
  .Navbar__ToggleShow {
    display: flex;
  }
  .main-nav__logo {
    position: relative;
    bottom: 49px;
    background-repeat: no-repeat;
    background-image: url("/assets/images/logo-green.png");
  }
  .man-nav__logo-green {
    visibility: hidden !important;
  }
  .main-nav__bars {
    display: flex;
    justify-content: flex-end;
    cursor: pointer;
    padding: 26px;
    font-size: 50px;
    color: #00964e;
    top: 0;
    margin-top: -196px;
  }
  .main-nav__link {
    color: #444;
  }

}

在桌面版中，一切正常:但在移动版中，导航栏在滚动时增加了它的高度，汉堡菜单消失了，

这是我尝试过的解决方案:(在 .man-nav 中移除高度)

.main-nav {
  margin: 0;
  display: block;
  position: inherit;
  overflow: auto;
  background: white;
}

现在导航栏高度不会随着滚动而增加，但汉堡菜单会消失。

更新 - 这是导航栏组件的完整 CSS:

@charset "UTF-8";
@font-face {
  font-family: "icomoon";
  src: url("/assets/fonts/icomoon.ttf");
}
.main-header {
  width: 100%;
  float: left;
  display: block;
  min-height: 100vh;
  height: 100%;
  background-size: cover;
  background-position: center;
  padding-bottom: 100px;
  background-image: url("/assets/images/banner.jpg");
}

.main-sticky {
  background-color: white;
  height: 100px;
}
.main-sticky__logo {
  position: relative !important;
  background-repeat: no-repeat;
  background-image: url("/assets/images/logo-green.png");
}

.main-sticky-link .main-nav__link {
  color: #444 !important;
}

.main-nav {
  position: sticky;
  align-items: center;
  justify-content: space-around;
  left: 0;
  display: flex;
  z-index: 2;
  width: 100%;
}
.main-nav__logo {
  position: relative;
}
.main-nav__bars {
  color: white;
}
.main-nav__list {
  list-style: none;
  display: flex;
  color: white;
  position: relative !important;
}
.main-nav__item {
  padding: 24px 27px;
  position: relative;
}
.main-nav__item:after {
  -webkit-transition: all 0.15s ease-in-out;
  transition: all 0.15s ease-in-out;
  content: "";
  display: block;
  float: left;
  background-color: #f5f5f5;
  width: 2px;
  height: 60px;
  -webkit-transform: rotate(20deg);
  transform: skew(155deg);
  position: absolute;
  right: 0;
  bottom: 6px;
}
.main-nav__item:last-child::after {
  content: "";
  width: 0px;
}
.main-nav__item:hover::after {
  width: calc(100% + 1px);
}
.main-nav__item:hover .main-nav__link {
  color: #444;
  position: relative;
  z-index: 3;
}
.main-nav__link {
  list-style: none;
  font-size: 1rem;
  color: white;
  font-family: "proxima-nova-n6", "proxima-nova";
  font-style: normal;
  font-weight: 600;
}
.main-nav__bars {
  display: none;
}

.main-banner {
  display: flex;
  justify-content: center;
  flex-direction: column;
  align-items: center;
}
.main-banner h2 {
  font-size: 3.75rem;
  line-height: 5.375rem;
  margin-bottom: 1.5rem;
  color: #fff;
  font-family: "proxima-nova-n4", "proxima-nova";
  font-style: normal;
  font-weight: 400;
  margin-top: 70px;
  font-weight: normal;
}
.main-banner p {
  font-size: 1.25rem;
  font-weight: normal;
  color: white;
  text-align: center;
  max-width: 700px;
  margin-bottom: 3.375rem;
  margin-right: auto;
  margin-left: auto;
}
.main-banner__green-button {
  height: 3.4375rem;
  background-color: #00964e;
  text-decoration: none;
  color: #fff;
  padding: 11px 13px;
  display: inline-block;
  box-sizing: border-box;
  line-height: 27px;
  border-radius: 30px;
  border: 3px solid #00964e;
  font-size: 1.125rem;
  padding-right: 50px;
  font-family: "proxima-nova-n6", "proxima-nova";
  font-style: normal;
  font-weight: 600;
  position: relative;
  -webkit-transition: all 0.15s ease-in-out;
  transition: all 0.15s ease-in-out;
}
.main-banner__arrow-right::after {
  font-family: "icomoon";
  font-style: normal;
  font-weight: normal;
  font-variant: normal;
  text-transform: none;
  content: "" !important;
  font-size: 33px;
}
.main-banner__green-button::after {
  float: right;
  content: "";
  display: block;
  width: 34px;
  height: 34px;
  margin-left: 10px;
  top: 10px;
  position: absolute;
  right: 10px;
}
.main-banner__green-button:hover {
  background-color: white;
  color: green;
}
.main-banner__arrow-down {
  transform: rotate(90deg);
  width: 34px;
  height: 34px;
  position: absolute;
  bottom: 176px;
  margin-left: -17px;
  left: 50%;
  z-index: 2;
  -webkit-transition: all 0.15s ease-in-out;
  transition: all 0.15s ease-in-out;
  background-image: url("/assets/images/icon-arrow-right.png");
}

#main-sticky {
  background-color: white;
}

@media only screen and (max-width: 768px) {
  .main-nav {
    margin: 0;
    display: block;
    position: inherit;
    height: auto;
    overflow: auto;
    background: white;
  }

  .main-nav__list {
    margin-top: 20px;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  .main-nav__item:after {
    content: "";
    width: 1px;
  }

  .Navbar__ToggleShow {
    display: flex;
  }

  .main-nav__logo {
    position: relative;
    bottom: 49px;
    background-repeat: no-repeat;
    background-image: url("/assets/images/logo-green.png");
  }

  .man-nav__logo-green {
    visibility: hidden !important;
  }

  .main-nav__bars {
    display: flex;
    justify-content: flex-end;
    cursor: pointer;
    padding: 26px;
    font-size: 50px;
    color: #00964e;
    /* position: absolute; */
    top: 0;
    /* bottom: 36px; */
    /* right: 28px; */
    margin-top: -196px;
  }

  .main-nav__link {
    color: #444;
  }

  .main-banner__arrow-down {
    display: block !important;
    position: initial;
    margin: 0 auto;
    margin-top: 50px;
  }
  .main-banner h2 {
    text-align: center;
  }
}

Here is a link to the live demo

Here is GitHub repo if interested

我的代码有什么问题？请帮忙，任何建议将不胜感激，谢谢。

最佳答案

有很多需要调试的地方，这是我发现的:

导航栏(.main-nav):

  • 首先，您有一个脚本 (index.js)，用于设置 main-nav、main-nav__bars 和main-nav__list 滚动到 fixed 位置。您不需要对所有三个组件都这样做。只需设置 main-nav 并让 child 继承。

  • 接下来最好将 height: auto 更改为 min-height: 125px(足以适应 Logo )

  • 然后需要设置nav .main-nav) overflow-x: hidden 消除溢出bug时右边的滚动条。

    • 或者更好的是，让您的 Logo 本身及其容器 (.main-nav__logo) 具有匹配的固定高度 (height: 125px) 并让 Logo 高度:继承。 (您将需要裁剪图像以使其看起来不错。请参阅下一节中的原因)

  • 您还使用媒体查询将 display: flex 覆盖为 block。删除它，这样您就可以使用 flex 属性。之后您可以执行以下操作:(附加到您的移动媒体查询中)

.main-nav {
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-content: stretch;
  align-items: stretch;
}

.main-nav__logo {
  flex: 2 1 60%;
}

.main-nav__toggle {
  flex: 2 1 30%;
}

.main-nav__list {
  flex: 0 1 100%;
}

这应该会给你这样的结果:

|-----------------------|----------|
|        Logo           |   Bars   |
|-----------------------|----------|
|                                  |
|             Nav ul               |
|                                  |
|----------------------------------|

标志(.man-nav__logo-green):

  • 接下来，您的 Logo 是 200x200，带有大量透明边距，通过使用 Photoshop 或其他工具将其裁剪以固定边距来修复您的 Logo 。这将使您的 Logo 适合而不会溢出导航栏。 (并且在边距样式方面更加灵活)
    • 一个肮脏的解决方案是将 Logo 的容器更改为 (.main-nav__logo) height: 160px 并添加 margin-top: -35px.

希望这会让您的生活更轻松一些。问候。

关于html - 滚动条上的导航栏高度，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/51921276/

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