ResponsiveWeb/layout02.html at master · DevSamLee/ResponsiveWeb · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>Layout 02</title>
 <style>
  * {margin: 0; padding: 0;}
  #wrap {width: 100%;}
  header {width: 100%; height: 150px; background: #81c784;}
  aside {float: left; width: 30%; height: 700px; background: #66bb6a;}
  section {float: left; width: 40%; height: 700px; background: #4caf50;}
  article {float: left; width: 30%; height: 700px; background: #43a047;}
  footer {clear: both; width: 100%; height: 150px; background: #388e3c;}

  /* screen width 0 - 1200px */
  @media (max-width: 1220px){
   aside {width: 40%;}
   section {width: 60%;}
   article {clear: both; float: none; width: 100%; height: 300px;}
  }

  /* screen width 0 - 768px */
  @media (max-width: 768px){
   aside {float: none; width: 100%; height: 300px;}
   section {float: none; width: 100%; height: 300px;}
  }

  /* screen width 0 - 480px */
  @media (max-width: 480px){
   header {height: 300px;}
   aside {height: 200px;}
   section {height: 200px;}
   article {height: 200px;}
  }
 </style>
</head>
<body>
 <div id="wrap">
  <header></header>
  <aside></aside>
  <section></section>
  <article></article>
  <footer></footer>
 </div>
</body>
</html>