Question

基本上，我有3个主要组成部分：1个导航栏，1个内容分区和1页脚。

我终于使我的设计对前两个组件有所响应，但对页脚却没有响应。

我的内容容器（父级）具有将高度设置为100％的类h-100，子级也具有100%值，唯一的问题是，当我使用检查器时，我看到我的父容器被识别为具有屏幕尺寸，并且因为页脚位于第一部分的后面（有3个或更多部分应该是屏幕高度减去导航栏的3倍或更多）

这是结果html的复制品（我通常使用Angular）

@media (max-width: 979px) {
  .section {
    padding-top: 0px;
  }
}

.section{
	display: flex;
	min-height: 100%;
    height: 100%;
    border: 1px solid black;
    padding-top: 60px;
}

.inner-section{
	padding:5%;
	border: 1px solid black;
}

html, body {height: 100%;}

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>

<nav class="navbar navbar-expand-md navbar-light bg-success fixed-top">
  <div class="container-fluid">
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarAHS" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarAHS">
      <ul class="navbar-nav mr-auto">
         <li class="nav-item">
           <a class="nav-link" >testleft</a>
         </li>
      </ul>
      <ul class="navbar-nav mx-auto order-0">
  	     <li class="nav-item">
      	   <a class="nav-link">testmiddle</a>
      	 </li>
      </ul>
      <ul class="navbar-nav ml-auto">
         <li class="nav-item">
           <a class="nav-link" href="#hello">testRight</a>
         </li>
      </ul>
    </div>
  </div>
</nav>

<div class="container-fluid h-100">
	<div class="row section justify-content-md-center">
		<div class="inner-section col-md-10 h-100">
			hello
		</div>
	</div>
	<div class="row section justify-content-md-center">
		<div class="inner-section col-md-10 h-100">
			hi
		</div>
	</div>
	<div class="row section justify-content-md-center">
		<div class="inner-section col-md-10 h-100">
			hey
		</div>
	</div>
</div>

<div class="row">
	Footer is not placed correctly
</div>

Answer 1

您的问题是您要为容器指定高度100％，但要指定高度的100％？在您的情况下，body标签为body，但body从内容大小中获取高度（全屏显示第一个内容框的高度约为1000像素），然后还为每个内容框指定100％的高度。再次100％是什么？此示例为1000px的容器。因此，页脚在其认为的页面大小之后跳了起来，但随后每个其他内容框也都具有相同的高度，这将导致您的情况很奇怪。

简而言之，如果您需要在容器上保持100％的高度，请尝试向容器中添加overflow: auto。否则，您可以从容器中删除高度为100％的规则。

Answer 2

这是我的解决方法。

请告诉我这是否不是最佳实践。

每行都以h-100作为类包装到div中并且有效

我还删除了container-fluid

HTML

@media (max-width: 979px) {
  .section {
    padding-top: 48px;
  }
}

.section{
	display: flex;
	min-height: 100%;
    height: 100%;
    border: 1px solid black;
    padding-top: 48px;
}

.inner-section{
	padding:5%;
	border: 1px solid black;
}
html, body {height: 100%;}

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
<nav class="navbar navbar-expand-md navbar-light bg-success fixed-top">
  <div class="container-fluid">
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarAHS" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarAHS">
      <ul class="navbar-nav mr-auto">
         <li class="nav-item">
           <a class="nav-link" >testleft</a>
         </li>
      </ul>
      <ul class="navbar-nav mx-auto order-0">
  	     <li class="nav-item">
      	   <a class="nav-link">testmiddle</a>
      	 </li>
      </ul>
      <ul class="navbar-nav ml-auto">
         <li class="nav-item">
           <a class="nav-link" href="#hello">testRight</a>
         </li>
      </ul>
    </div>
  </div>
</nav>
<div class="h-100">
	<div class="row section justify-content-md-center">
		<div class="inner-section col-md-10">
			hello
		</div>
	</div>
</div>
<div class="h-100">
	<div class="row section justify-content-md-center">
		<div class="inner-section col-md-10">
			hey
		</div>
	</div>
</div>
<div class="h-100">
	<div class="row section justify-content-md-center">
		<div class="inner-section col-md-10">
			ola
		</div>
	</div>
</div>
<div class="row">
	Footer is placed correctly.
</div>

使用Bootstrap 4在全屏高度响应div之后放置html

2 个答案: