效果如图:
代码如下:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>404__欢哥网</title>
<style type="text/css">
body,div,h3,h4,li,ol{margin:0;padding:0}
body{font:14px/1.5 'Microsoft YaHei','微软雅黑',Helvetica,Sans-serif;min-1200px;background:#f0f1f3;}
:focus{outline:0}
h3,h4,strong{font-weight:700}
a{color:#428bca;text-decoration:none}
a:hover{text-decoration:underline}
.error-page{background:#f0f1f3;padding:80px 0 180px}
.error-page-container{position:relative;z-index:1}
.error-page-main{position:relative;background:#f9f9f9;margin:0 auto;617px;-ms-box-sizing:border-box;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;padding:50px 50px 70px}
.error-page-main:before{content:'';display:block;background:url(img/errorPageBorder.png?1427783409637);height:7px;position:absolute;top:-7px;100%;left:0}
.error-page-main h3{font-size:24px;font-weight:400;border-bottom:1px solid #d0d0d0}
.error-page-main h3 strong{font-size:54px;font-weight:400;margin-right:20px}
.error-page-main h4{font-size:20px;font-weight:400;color:#333}
.error-page-actions{font-size:0;z-index:100}
.error-page-actions div{font-size:14px;display:inline-block;padding:30px 0 0 10px;50%;-ms-box-sizing:border-box;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;color:#838383}
.error-page-actions ol{list-style:decimal;padding-left:20px}
.error-page-actions li{line-height:2.5em}
.error-page-actions:before{content:'';display:block;position:absolute;z-index:-1;bottom:17px;left:50px;200px;height:10px;-moz-box-shadow:4px 5px 31px 11px #999;-webkit-box-shadow:4px 5px 31px 11px #999;box-shadow:4px 5px 31px 11px #999;-moz-transform:rotate(-4deg);-webkit-transform:rotate(-4deg);-ms-transform:rotate(-4deg);-o-transform:rotate(-4deg);transform:rotate(-4deg)}
.error-page-actions:after{content:'';display:block;position:absolute;z-index:-1;bottom:17px;right:50px;200px;height:10px;-moz-box-shadow:4px 5px 31px 11px #999;-webkit-box-shadow:4px 5px 31px 11px #999;box-shadow:4px 5px 31px 11px #999;-moz-transform:rotate(4deg);-webkit-transform:rotate(4deg);-ms-transform:rotate(4deg);-o-transform:rotate(4deg);transform:rotate(4deg)}
</style>
</head>
<body>
<div class="error-page">
<div class="error-page-container">
<div class="error-page-main">
<h3>
<strong>404</strong>很抱歉，您要访问的页面不存在！
</h3>
<div class="error-page-actions">
<div>
<h4>可能原因：</h4>
<ol>
<li>网络信号差不稳定</li>
<li>找不到请求的页面</li>
<li>输入的网址不正确</li>
</ol>
</div>
<div>
<h4>可以尝试：</h4>
<ol>
<li><a href="/">返回首页</a></li>
<li><a href="/">留言反馈</a></li>
</ol>
</div>
</div>
</div>
</div>
</div>
</body>
</html>