Skey Block
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>
<header>我是header</header>
<div class="content">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Placeat maxime ipsa voluptatem, odit, ex omnis ipsum nesciunt rerum velit quo officia sit ullam distinctio tempora et! Nesciunt similique ad, doloremque.</div>
</body>
</html>
body,html {
padding: 0;
margin:0;
}
header {
width: 100%;
height: 250px;
background: pink;
border: 1px solid blue;
}
header:after {
content: "12121";
display: block;
height: 100px;
width: 100%;
background: green;
position: absolute;
top: 251px;
left: 0;
transform: skewY(5deg);
transform-origin: right;
border: 1px solid red;
}
.content {
background: green;
/* margin-top: 500px; */
width: 100%;
height: 400px;
}