效果如上图。
看起来貌似很简单,但是做起来有难度。路过的学霸们能否指点一下?
学渣在此谢过了 ~~(╯﹏╰)||
.item {
border:1px solid green;
border-bottom: 1px solid #000;
}
.item:hover{
border:1px solid #000;
border-bottom: 0 // 或者 1px solid transparent
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link rel="stylesheet" href="a.css">
<style>
*{margin: 0; padding: 0;}
li{list-style: none;}
.box{margin: 50px 0 0 150px}
ul{border-bottom:1px solid #000; width: 100%; height: 50px; }
ul li{float: left; width:70px; border:1px solid #000;margin-left:-1px;text-align: center; height: 50px; line-height: 50px;}
li:hover,.act{border:1px solid red; border-bottom: 1px solid #FFF; position: relative;z-index: 2;}
</style>
</head>
<body>
<div class="box">
<ul>
<li>首页</li>
<li>首页</li>
<li>首页</li>
<li>首页</li>
<li>首页</li>
</ul>
</div>
</body>
</html>
这样子的
css hover border-bottom:none
demo:nav
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
*{margin: 0; padding: 0;}
li{
list-style: none;
}
ul.tabBox{
border-bottom:1px solid #000;
width: 100%;
height: 53px;
font-size: 0;
}
ul.tabBox li{
font-size: 16px;
letter-spacing: normal;
word-spacing: normal;
display: inline-block;
width:70px;
border:1px solid blue;
border-bottom: 0;
margin-left:-1px;
text-align: center;
height: 52px;
line-height: 52px;
}
ul.tabBox li:hover{
border:1px solid black;
height: 52px;
border-bottom: 1px solid #FFF;
position: relative;z-index: 2;
}
ul.tabBox li:first-child{
margin-left:50px;
}
</style>
</head>
<body>
<ul class="tabBox">
<li>Tab1</li>
<li>Tab2</li>
<li>Tab3</li>
<li>Tab4</li>
<li>Tab5</li>
</ul>
</body>
</html>
前面大家已经说得比较详细了,如果要兼容较低版本的IE浏览器,可以考虑 a:hover 上做样式
http://jsbin.com/yagurutore/edit?html,css,output