<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
div{
width: 300px;
height: 200px;
border: 1px solid #000;
box-sizing: border-box;
margin: 200px auto;
/*默认情况下会从上至下的渐变*/
/* background: linear-gradient(red,green);*/
/*background: linear-gradient(to top,red,green);*/
/* background:linear-gradient(to top right,red,green);*/
background: linear-gradient(45deg,red, green);
}
</style>
</head>
<body>
<div></div>
</body>
</html>