圣杯布局

by Boyanliuu

HTML

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>圣杯布局</title>
</head>
<body>
<div>
<header> header</header>
<div>
 Main content
</div>
<div>
Left content
</div>
<div>
ri
</div>
</div>
</body>
</html>