我是 bootstrap 和 HTML & CSS 的新手。 我试图在我试图创建的这个网站上使用 jumbotron，但是当我应用背景图像时，我希望它固定一个大小，即使窗口的大小发生了变化，事实上我想在所有网站上都这样做.
这是全尺寸图像的样子，无论窗口大小如何，我都希望它是这样的
这是缩小窗口后的效果
还有一件事，不知何故我在网站上得到了一个机器人和右边距，我想删除它，但我找不到它的来源。
这是我的 HTML:
<!DOCKTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<title>WebHosting</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<link rel="stylesheet" href="main.css" type="text/css">
</head>
<body>
<!--NavBar-->
<div class="row">
<div class="col-lg-8">
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="index.html">WebHosting</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right">
<li><a href="contactos.html">Contactos</a></li>
<li><a href="preços.html">Preços</a></li>
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>
</div>
</div><!--NavBar END-->
<!--<div class="row">
<div class="col-xs-12 col-sm-6 col-md-8"></div>
<div class="col-xs-6 col-md-4"></div>
</div>-->
<section class="jumbotron">
<div class="container">
<div class="row text-center">
<h1>WebHosting</h1>
<p>Host your WebSite now!!</p>
<p><a class="btn btn-primary btn-lg" href="precos" role="button">Learn more</a></p>
</div>
</div>
</section>
<!--<div class="row">
<div class="col-md-6">
</div>
<div class="col-md-6">
</div>
</div>-->
</body>
</html>
和 CSS:
body {
}
.jumbotron{
align-items:center;
display:flex;
background-image:url('https://static.pexels.com/photos/392018/pexels-photo-392018.jpeg');
background-size:cover;
background-color:#898888;
height:500px;
color:white;
}
最佳答案
您可以使用viewport 单位来获取它。
body {
margin:0;
padding:0;
}
.jumbotron {
align-items: center;
display: flex;
background-image: url('https://static.pexels.com/photos/392018/pexels-photo-392018.jpeg');
background-size: cover;
background-color: #898888;
height: 50vh; /* Add this */
color: white;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<title>WebHosting</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<link rel="stylesheet" href="main.css" type="text/css">
</head>
<body>
<!--NavBar-->
<div class="row">
<div class="col-lg-8">
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="index.html">WebHosting</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right">
<li><a href="contactos.html">Contactos</a></li>
<li><a href="preços.html">Preços</a></li>
</ul>
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container-fluid -->
</nav>
</div>
</div>
<!--NavBar END-->
<!--<div class="row">
<div class="col-xs-12 col-sm-6 col-md-8"></div>
<div class="col-xs-6 col-md-4"></div>
</div>-->
<section class="jumbotron">
<div class="container">
<div class="row text-center">
<h1>WebHosting</h1>
<p>Host your WebSite now!!</p>
<p><a class="btn btn-primary btn-lg" href="precos" role="button">Learn more</a></p>
</div>
</div>
</section>
<!--<div class="row">
<div class="col-md-6">
</div>
<div class="col-md-6">
</div>
</div>-->
</body>
</html>关于html - Bootstrap 网站 jumbotron 图像缩放，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44656123/