CSS3鼠标滑过导航出现下划线动画特效代码

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以下是 CSS3鼠标滑过导航出现下划线动画特效代码的示例演示效果:

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部分效果截图:

HTML代码(index.html):

<!doctype html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> 
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CSS3鼠标滑过导航出现下划线动画特效</title>
<link rel="stylesheet" type="text/css" href="css/htmleaf-demo.css">
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<div class="htmleaf-container">
	<header class="header">
		<div class="wrapper">
			<h1 class="site-title">CSS3鼠标滑过导航出现下划线动画特效</h1>
		</div>
		<nav class="navigation">
			<div class="wrapper">
				<ul class="navigation-list ul-reset">
					<li class="navigation-item ib">
						<a href="#" class="navigation-link">
							Home
						</a>
					</li>
					<li class="navigation-item ib">
						<a href="#" class="navigation-link">
							About
						</a>
					</li>
					<li class="navigation-item ib">
						<a href="#" class="navigation-link">
							Contact
						</a>
					</li>
					<li class="navigation-item ib">
						<a href="#" class="navigation-link">
							FAQ
						</a>
					</li>
					<li class="navigation-item ib">
						<a href="#" class="navigation-link">
							More
						</a>
					</li>
				</ul>
			</div>
		</nav>
	</header>
	<!-- /.header -->
</div>
</body>
</html>

CSS代码(style.css):

/* defaults */
body{background:#494A5F;color:#D5D6E2;font-weight:500;font-size:1.05em;font-family:"Microsoft YaHei","宋体","Segoe UI","Lucida Grande",Helvetica,Arial,sans-serif,FreeSans,Arimo;}
a{color:#2fa0ec;text-decoration:none;outline:none;}
a:hover,a:focus{color:#74777b;}
html,body{height:100%;}
html{box-sizing:border-box;font-size:16px;}
*,*:before,*:after{box-sizing:inherit;}
body{margin:0;line-height:1.5;font-family:Roboto,Helvectica,Arial,sans-serif;/*color:#333;*/
}
/* main ie fix */
main{display:block;}
/* headers */
h1{font-size:2.2em;}
h2{font-size:2em;}
h3{/*font-size:1.8em;*/
}
h4{font-size:1.6em;}
h5{font-size:1.4em;}
h6{font-size:1.2em;}
/* anchor links */
a{color:#009688;}
a:hover,a:active{text-decoration:none;}
/* inline block */
.ib{display:-moz-inline-stack;display:inline-block;zoom:1;*display:inline;vertical-align:top;}
/* ul-reset */
.ul-reset{padding-left:0;margin-top:0;margin-bottom:0;list-style:none;}
/* wrapper */
.wrapper{width:80%;margin-right:auto;margin-left:auto;padding-right:20px;padding-left:20px;}
/* header */
.header{text-align:center;}
/* navigation */
.navigation{background-color:#eee;font-weight:700;}
.navigation-list{font-size:0;padding-top:10px;padding-bottom:10px;}
.navigation-item{font-size:1.2rem;}
.navigation-link{display:block;position:relative;padding:5px 20px;text-decoration:none;color:#333;-webkit-transition:color .2s ease-in-out;transition:color .2s ease-in-out;}
.navigation-link:before{content:"";position:absolute;bottom:0;width:0;border-bottom:solid 2px;}
.navigation-link:before{left:0;}
.navigation-link:hover{color:#009688;}
.navigation-link:hover:before{width:100%;}
.navigation-link:before{-webkit-transition:width .2s ease-in-out;transition:width .2s ease-in-out;}
/* main */
.main{padding-top:20px;padding-bottom:20px;}
.content-article{margin-top:80px;}
.content-article:first-child{margin-top:0;}
.content-article > h1:first-child{margin-top:0;}
/* media queries */
@media only screen and (max-width:1024px){.wrapper{width:90%;}
}

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