首页 > html > border > Effect - 如何创建不同颜色的双边框

Effect - 如何创建不同颜色的双边框

border 【border】
我们想知道如何创建不同颜色的双边框。
代码展示 运行结果 

<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
.double-border {
  background-color: #ccc;
  border: 4px solid #fff;
  padding: 2em;
  width: 16em;
  height: 16em;
  position: relative;
}

.double-border:before {
  background: none;
  border: 4px solid #666;
  content: "";
  display: block;
  position: absolute;
  top: 4px;
  left: 4px;
  right: 4px;
  bottom: 4px;
  pointer-events: none;
}
</style>
</head>
<body>
  <div class="double-border">
  Parent element border in white, 
  pseudo-element border in grey.</div>
</body>
</html>