在div中添加box-shadow属性 - 在线编辑器

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <style>
    div {
      width: 300px;
      height: 100px;
      background-color: yellow;
      box-shadow: 10px 10px 5px #888888;
    }
  </style>
</head>
<body>

  <div></div>

</body>
</html>
​x
 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <style>
    div {
      width: 300px;
      height: 100px;
      background-color: yellow;
      box-shadow: 10px 10px 5px #888888;
    }
  </style>
</head>
<body>
​
  <div></div>
​
</body>
</html>