用纯css实现某个元素的双边框效果,边框大小都为5,如图
用box-shadow或outline
Box-shadow: background:yellow;
Box-shadow: 0 0 0 5px red, 0 0 0 10px black;
Outline: background:yellow;
border: 5px solid red,
outline:5px solid black;
用纯css实现某个元素的双边框效果,边框大小都为5,如图
用box-shadow或outline
Box-shadow: background:yellow;
Box-shadow: 0 0 0 5px red, 0 0 0 10px black;
Outline: background:yellow;
border: 5px solid red,
outline:5px solid black;