<!DOCTYPE HTML>
<html lang="en-US">
<head>
<title>css實現鼠標懸停時圖片加邊框效果</title>
<style type="text/css">
body{background:#222;color:#06c;}
em{ font-style:inherit;}
img{background:white;margin:0 5px;width:70px;height:70px;}
img:hover{border:1px red solid;}
.demo2 img{border:1px solid transparent;}
.demo2 img:hover{border:1px red solid;}
.demo3 img:hover{width:68px;height:68px;border:1px solid yellow;}
</style>
</head>
<body>
<div class="demo1">
<img src="/jscss/demoimg/wall_s6.jpg" />
<img src="/jscss/demoimg/wall_s6.jpg" />
<img src="/jscss/demoimg/wall_s6.jpg" />
<img src="/jscss/demoimg/wall_s6.jpg" />
<em>明顯看到當img標簽在hover的時候由於出現邊框導致位移</em>
</div>
<div class="demo2">
<img src="/jscss/demoimg/wall_s6.jpg" />
<img src="/jscss/demoimg/wall_s6.jpg" />
<img src="/jscss/demoimg/wall_s6.jpg" />
<img src="/jscss/demoimg/wall_s6.jpg" />
<em>給每個img添加border:1px solid transparent;世界就和平了</em>
</div>
<div class="demo3">
<img src="/jscss/demoimg/wall_s6.jpg" />
<img src="/jscss/demoimg/wall_s6.jpg" />
<img src="/jscss/demoimg/wall_s6.jpg" />
<img src="/jscss/demoimg/wall_s6.jpg" />
<em>修改width和height,世界繼續和平</em>
</div>
</body>
</html>
代碼保存打開
1.修改width和height
2.給每個img添加border:1px solid transparent（如果是div或者塊元素出現這種情況也可以加，誰出現誰加就對了）
轉載http://www.codefans.net/jscss/code/3039.shtml