<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>渐变</title>
</head>
<style>
*{margin: 0; padding: 0;}
div{height: 100px;}
.grad1{
background: linear-gradient(to right,red,blue);
}
.grad2{
background: linear-gradient(to bottom,red,blue);
}
.grad3{
background: linear-gradient(to bottom right,red,blue);
}
</style>
<body>
<h1>左右渐变</h1>
<div class="grad1"></div>
<h1>上下渐变</h1>
<div class="grad2"></div>
<h1>左上角往右下角渐变</h1>
<div class="grad3"></div>
</body>
</html>