<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
body
{
margin-left:200px;
background:#5d9ab2 url('https://img.php.cn/upload/article/000/000/015/5c6ba8b3a7ee3101.png') no-repeat top left;
}
.container
{
text-align:center;
}
.center_div
{
border:1px solid gray;
margin-left:auto;
margin-right:auto;
width:90%;
background-color:#d0f0f6;
text-align:left;
padding:8px;
}
</style>
</head>
<body>
<div class="container">
<div class="center_div">
<h1>Hello World!</h1>
<p>This example contains some advanced CSS methods you may not have learned yet. But, we will explain these methods in a later chapter in the tutorial.</p>
</div>
</div>
</body>
</html>
