CSS3 下拉菜单按钮

最新推荐文章于 2024-09-10 16:20:19 发布

michael_zming

最新推荐文章于 2024-09-10 16:20:19 发布

阅读量935

点赞数 1

HTML5 专栏收录该内容

4 篇文章

订阅专栏

本文介绍了一种使用CSS3技术实现的多级下拉菜单效果。通过HTML和CSS3特性，如圆角、阴影及过渡效果等，该菜单不仅外观现代且交互友好。文章提供了完整的代码示例和说明。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

直接看图片展示：

代码展示：

<!DOCTYPE HTML />
<html>
<head>
<meta  charset="UTF-8" />
<title>CSS3 Dropdown Menu</title>
<link href="style.css" rel="stylesheet" type="text/css"/>
</head>

<body>
<ul id="nav">
	<li class="current"><a href="http://www.webdesignerwall.com">Home</a></li>
	<li><a href="http://www.ndesign-studio.com">My Projects</a>
		<ul>
			<li><a href="http://www.ndesign-studio.com">N.Design Studio</a>
				<ul>
					<li><a href="http://www.ndesign-studio.com/portfolio">Portfolio</a></li>
					<li><a href="http://www.ndesign-studio.com/wp-themes">WordPress Themes</a></li>
					<li><a href="http://www.ndesign-studio.com/wallpapers">Wallpapers</a></li>
					<li><a href="http://www.ndesign-studio.com/tutorials">Illustrator Tutorials</a></li>
				</ul>
			</li>
			<li><a href="http://www.webdesignerwall.com">Web Designer Wall</a>
				<ul>
					<li><a href="http://jobs.webdesignerwall.com">Design Job Wall</a></li>
				</ul>
			</li>
			<li><a href="http://icondock.com">IconDock</a></li>
			<li><a href="http://bestwebgallery.com">Best Web Gallery</a></li>
		</ul>
	</li>
	<li><a href="#">Multi-Levels</a>
		<ul>
			<li><a href="#">Team</a>
				<ul>
					<li><a href="#">Sub-Level Item</a></li>
					<li><a href="#">Sub-Level Item</a>
						<ul>
							<li><a href="#">Sub-Level Item</a></li>
							<li><a href="#">Sub-Level Item</a></li>
							<li><a href="#">Sub-Level Item</a></li>
						</ul>
					</li>
					
					<li><a href="#">Sub-Level Item</a></li>
				</ul>
			</li>
			<li><a href="#">Sales</a></li>
			<li><a href="#">Another Link</a></li>
			<li><a href="#">Department</a>
				<ul>
					<li><a href="#">Sub-Level Item</a></li>
					<li><a href="#">Sub-Level Item</a></li>
					<li><a href="#">Sub-Level Item</a></li>
				</ul>
			</li>
		</ul>
	</li>	
	<li><a href="#">About</a></li>
	<li><a href="#">Contact Us</a></li>
</ul>
<p><a href="http://www.webdesignerwall.com/tutorials/css3-dropdown-menu/">CSS3 Dropdown Menu</a> <em>by</em> <a href="http://www.webdesignerwall.com">Web Designer Wall</a></p>

</body>
</html>

CSS样式:

body {
	font: normal .8em/1.5em Arial, Helvetica, sans-serif;
	background: #ebebeb;
	width: 900px;
	margin: 100px auto;
	color: #666;
	background-size:auto;
}

a {
	color: #333;
}
#nav {
	margin: 0;
	padding: 7px 6px 0;
	background: #7d7d7d url(img/gradient.png) repeat-x 0 -110px;
	line-height: 100%;

	border-radius: 2em;
	-webkit-border-radius: 2em;
	-moz-border-radius: 2em;

	-webkit-box-shadow: 0 1px 3px rgba(0,0,0, .4);
	-moz-box-shadow: 0 1px 3px rgba(0,0,0, .4);
}
#nav li {
	margin: 0 5px;
	padding: 0 0 8px;
	float: left;
	position: relative;
	list-style: none;
}


/* main level link */
#nav a {
	font-weight: bold;
	color: #e7e5e5;
	text-decoration: none;
	display: block;
	padding:  8px 20px;
	margin: 0;

	-webkit-border-radius: 1.6em;
	-moz-border-radius: 1.6em;
	
	text-shadow: 0 1px 1px rgba(0,0,0, .3);
}
#nav a:hover {
	background: #000;
	color: #fff;
}

/* main level link hover */
#nav .current a, #nav li:hover > a {
	background: #666 url(img/gradient.png) repeat-x 0 -40px;
	color: #444;
	border-top: solid 1px #f8f8f8;

	-webkit-box-shadow: 0 1px 1px rgba(0,0,0, .2);
	-moz-box-shadow: 0 1px 1px rgba(0,0,0, .2);
	box-shadow: 0 1px 1px rgba(0,0,0, .2);

	text-shadow: 0 1px 0 rgba(255,255,255, 1);
}

/* sub levels link hover */
#nav ul li:hover a, #nav li:hover li a {
	background: none;
	border: none;
	color: #666;

	-webkit-box-shadow: none;
	-moz-box-shadow: none;
}
#nav ul a:hover {
	background: #0078ff url(img/gradient.png) repeat-x 0 -100px !important;
	color: #fff !important;

	-webkit-border-radius: 0;
	-moz-border-radius: 0;

	text-shadow: 0 1px 1px rgba(0,0,0, .1);
}

/* dropdown */
#nav li:hover > ul {
	display: block;
}

/* level 2 list */
#nav ul {
	display: none;

	margin: 0;
	padding: 0;
	width: 185px;
	position: absolute;
	top: 35px;
	left: 0;
	background: #ddd url(img/gradient.png) repeat-x 0 0;
	border: solid 1px #b4b4b4;

	-webkit-border-radius: 10px;
	-moz-border-radius: 10px;
	border-radius: 10px;

	-webkit-box-shadow: 0 1px 3px rgba(0,0,0, .3);
	-moz-box-shadow: 0 1px 3px rgba(0,0,0, .3);
	box-shadow: 0 1px 3px rgba(0,0,0, .3);
}
#nav ul li {
	float: none;
	margin: 0;
	padding: 0;
}

#nav ul a {
	font-weight: normal;
	text-shadow: 0 1px 0 #fff;
}

/* level 3+ list */
#nav ul ul {
	left: 181px;
	top: -3px;
}

/* rounded corners of first and last link */
#nav ul li:first-child > a {
	-webkit-border-top-left-radius: 9px;
	-moz-border-radius-topleft: 9px;

	-webkit-border-top-right-radius: 9px;
	-moz-border-radius-topright: 9px;
}
#nav ul li:last-child > a {
	-webkit-border-bottom-left-radius: 9px;
	-moz-border-radius-bottomleft: 9px;

	-webkit-border-bottom-right-radius: 9px;
	-moz-border-radius-bottomright: 9px;
}

/* clearfix */
#nav:after {
	content: ".";
	display: block;
	clear: both;
	visibility: hidden;
	line-height: 0;
	height: 0;
}
#nav {
	display: inline-block;
} 
html[xmlns] #nav {
	display: block;
}
 
* html #nav {
	height: 1%;
}

gradient.png: