[22--CSS] 背景颜色
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>背景颜色</title>
<style>
div{background-color: #006699;}
</style>
</head>
<body>
<div>我是有背景颜色的</div>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>背景颜色</title>
<style>
div{background-color: #006699;}
</style>
</head>
<body>
<div>我是有背景颜色的</div>
</body>
</html>
