CSS：Double-Border，如何

Question

  

可能重复：
  input focus outer glow

我如何在CSS中执行此操作？在焦点上看起来它有双边框......

Answer 1

input:focus { property to apply }

对于一个实例，请查看以下小提琴： http://jsfiddle.net/L5xvJ/

input:focus { 
border: 1px solid #0af; 
outline: none; 
-moz-box-shadow: 0px 0px 15px rgba(0, 170, 255,.5);
-webkit-box-shadow: 0px 0px 15px rgba(0, 170, 255,.5);
box-shadow: 0px 0px 15px rgba(0, 170, 255,.5); }

not：焦点不应与：active - ＆gt;混淆 What is the difference between :focus and :active?