<!DOCTYPE html>
<html>
<head>
<style>
html {
background: gray;
}
body {
transform: rotate(20deg);
-webkit-transform-origin: top left;
background-color: silver;
overflow: hidden;
}
.contents {
height: 1200px;
width: 100%;
border: 1px solid black;
}
</style>
</head>
<body>
<div class="contents"></div>
</body>
</html>