我正在尝试构建一个网站（使用引导程序4），该网站的页脚包含3列。当浏览器足够大（例如在PC上打开）时，它看起来绝对不错，但是如果浏览器处于压缩状态（例如手机），那么您只会看到页脚的一部分。
请问我在做什么错？我已经搜查了几个小时，阅读了许多其他有关Stack Overflow的文章，并尝试了一下，却一无所获。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>Website</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<style>
html {
position: relative;
min-height: 100%;
}
body {
margin: 0 0 200px; /* bottom has to be the same as footer height */
}
.context-dark, .bg-gray-dark, .bg-primary
{
color: rgba(255, 255, 255, 0.8);
}
.footer-classic
{
padding-top: 10px;
position: fixed;
bottom: 0;
width: 100%;
height: 200px;
}
.copyright-container
{
padding: 10x;
}
</style>
<body>
<!-- Navigation -->
<nav class="navbar navbar-expand-lg navbar-dark bg-dark static-top">
<div class="container">
<a class="navbar-brand" href="#">
<img src="2.png" alt="">
</a>
<button class="navbar-toggler" type="button" data-toggle="collapse"
data-target="#navbarResponsive" aria-controls="navbarResponsive"
aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarResponsive">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="#">Log in</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Sign up</a>
</li>
</ul>
</div>
</div>
</nav>
<div class="container"><p>Page Content</p></div>
<footer class="section footer-classic context-dark bg-image" style="background: #000000;">
<div class="container">
<div class="row row-30">
<div class="col-md-4 col-xl-5">
<div class="pr-xl-4">
<hr>
<div class="text-center center-block">
<p>You can follow us on:</p>
<a href="https://www.facebook.com/bootsnipp"><i id="social-fb" class="fa fa-facebook-square fa-3x social"></i></a>
<a href="https://twitter.com/bootsnipp"><i id="social-tw" class="fa fa-twitter-square fa-3x social"></i></a>
<a href="mailto:bootsnipp@gmail.com"><i id="social-em" class="fa fa-envelope-square fa-3x social"></i></a>
</div>
<hr>
</div>
</div>
<div class="col-md-4 col-xl-3 footer-list">
<h5>Site</h5>
<ul class="nav-list">
<li><a href="#">About</a></li>
<li><a href="#">Help</a></li>
<li><a href="#">Accessibility</a></li>
</ul>
</div>
<div class="col-md-4 col-xl-3 footer-list">
<h5>Legal</h5>
<ul class="nav-list">
<li><a href="#">Terms of Service</a></li>
<li><a href="#">Privacy Policy</a></li>
<li><a href="#">Cookie Policy</a></li>
</ul>
</div>
</div>
</div>
<div class="row copyright-container">
<p class="rights">
<span>© </span><span class="copyright-year">2020</span><span> </span><span>PERSON</span><span>. </span><span>All Rights Reserved.</span></p>
</div>
</footer>
</body>
</html>
答案 0 :(得分：1)
我认为主要问题可能是结构不正确（HTML和相应的Bootstrap类）。如果您要使用Bootstrap的网格系统，那么follow the structure that they recommend就是一个好主意，以便拥有一个完全响应的网站。
首先遵循它们的约定和结构可能会有些棘手，但是一旦完成这些动作，它应该可以正常工作。请注意，具体的样式和布局确实需要进行一些研究。
以下示例的灵感来自其project examples page。我根据您有关页脚响应性的问题改编了代码。为了简单起见，我删除了顶部导航栏：
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>Sticky Footer inspired by Bootstrap Examples</title>
<!-- Bootstrap 4 CDN as of 01/17/2020 -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<!-- Fontawesome 4.7 -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
html,
body {
height: 100%;
}
.fa {
color: white;
}
</style>
</head>
<body class="d-flex flex-column">
<!-- Main page content -->
<main class="flex-shrink-0">
<div class="container">
<h1 class="mt-5">Main container</h1>
</div>
</main>
<!-- Respoonsive footer using Bootstrap's grid layout -->
<footer class="footer mt-auto py-3 bg-dark">
<div class="container">
<div class="row">
<div class="col align-self-center">
<i class="fa fa-twitter-square fa-4x" aria-hidden="true"></i>
<i class="fa fa-facebook-square fa-4x" aria-hidden="true"></i>
<i class="fa fa-envelope-square fa-4x" aria-hidden="true"></i>
</div>
<div class="col">
<h5>Site</h5>
<ul class="list-unstyled text-small">
<li><a class="text-muted" href="#">About</a></li>
<li><a class="text-muted" href="#">Help</a></li>
<li><a class="text-muted" href="#">Accessibility</a></li>
</ul>
</div>
<div class="col">
<h5>Legal</h5>
<ul class="list-unstyled text-small">
<li><a class="text-muted" href="#">Terms of Service</a></li>
<li><a class="text-muted" href="#">Privacy Policy</a></li>
<li><a class="text-muted" href="#">Cookie Policy</a></li>
</ul>
</div>
</div>
</div>
</footer>
</body>
</html>
答案 1 :(得分：0)
我已经编辑了您的CSS和HTML
html,body, .wrapper {
position: relative;
height: 100%;
}
.context-dark, .bg-gray-dark, .bg-primary
{
color: rgba(255, 255, 255, 0.8);
}
.footer-classic
{
padding-top: 10px;
}
.copyright-container
{
padding: 10x;
}