我复制此代码:http ://cssmenusmaker.blogspot.com/2013/01/flat-accented-dropdown-menus.html以创建下拉菜单。但是,如果存在带有子元素的菜单元素,则网站的主体会增加。我找到了导致此错误的一段代码,但不知道如何纠正它。
这件作品是:
#cssmenu ul ul ul {
top: 0;
left: auto;
right: -99.5%;}
一个 MWE:
<html>
<head>
<style type="text/css">
#cssmenu {
padding: 0;
margin: 0;
border: 0; }
#cssmenu ul, #cssmenu li {
list-style: none;
margin: 0;
padding: 0; }
#cssmenu ul {
position: relative;
z-index: 597; }
#cssmenu ul li {
float: left;
min-height: 1px;
vertical-align: middle; }
#cssmenu ul li.hover,
#cssmenu ul li:hover {
position: relative;
z-index: 599;
cursor: default; }
#cssmenu ul ul {
visibility: hidden;
position: absolute;
top: 100%;
left: 0;
z-index: 598;
width: 100%; }
#cssmenu ul ul li {
float: none; }
#cssmenu ul ul ul {
top: 0;
left: auto;
right: -99.5%; }
#cssmenu ul li:hover > ul {
visibility: visible; }
#cssmenu ul ul {
bottom: 0;
left: 0; }
#cssmenu ul ul {
margin-top: 0; }
#cssmenu ul ul li {
font-weight: normal; }
#cssmenu a {
display: block;
line-height: 1em;
text-decoration: none; }
/* Custom CSS Styles */
#cssmenu {
background: #333;
border-bottom: 4px solid #1b9bff;
font-family: 'Oxygen Mono', Tahoma, Arial, sans-serif;
font-size: 12px; }
#cssmenu > ul {
*display: inline-block; }
#cssmenu:after, #cssmenu ul:after {
content: '';
display: block;
clear: both; }
#cssmenu ul {
text-transform: uppercase; }
#cssmenu ul ul {
border-top: 4px solid #1b9bff;
text-transform: none;
min-width: 190px; }
#cssmenu ul ul a {
background: #1b9bff;
color: #FFF;
border: 1px solid #0082e7;
border-top: 0 none;
line-height: 150%;
padding: 16px 20px; }
#cssmenu ul ul ul {
border-top: 0 none; }
#cssmenu ul ul li {
position: relative; }
#cssmenu ul ul li:first-child > a {
border-top: 1px solid #0082e7; }
#cssmenu ul ul li:hover > a {
background: #35a6ff; }
#cssmenu ul ul li:last-child > a {
-moz-border-radius: 0 0 3px 3px;
-webkit-border-radius: 0 0 3px 3px;
border-radius: 0 0 3px 3px;
-moz-background-clip: padding;
-webkit-background-clip: padding-box;
background-clip: padding-box;
-moz-box-shadow: 0 1px 0 #1b9bff;
-webkit-box-shadow: 0 1px 0 #1b9bff;
box-shadow: 0 1px 0 #1b9bff; }
#cssmenu ul ul li:last-child:hover > a {
-moz-border-radius: 0 0 0 3px;
-webkit-border-radius: 0 0 0 3px;
border-radius: 0 0 0 3px;
-moz-background-clip: padding;
-webkit-background-clip: padding-box;
background-clip: padding-box; }
#cssmenu ul ul li.has-sub > a:after {
content: '+';
position: absolute;
top: 50%;
right: 15px;
margin-top: -8px; }
#cssmenu ul li:hover > a, #cssmenu ul li.active > a {
background: #1b9bff;
color: #FFF; }
#cssmenu ul li.has-sub > a:after {
content: '+';
margin-left: 5px; }
#cssmenu ul li.last ul {
left: auto;
right: 0; }
#cssmenu ul li.last ul ul {
left: auto;
right: 99.5%; }
#cssmenu a {
background: #333;
color: #CBCBCB;
padding: 0 20px; }
#cssmenu > ul > li > a {
line-height: 48px; }
</style>
<link href="cssmenu.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id='cssmenu'>
<ul>
<li class='active'><a href='index.html'><span>Home</span></a></li>
<li class='has-sub'><a href='#'><span>Products</span></a>
<ul>
<li class='has-sub'><a href='#'><span>Product 1</span></a>
<ul>
<li><a href='#'><span>Sub Item</span></a></li>
<li class='last'><a href='#'><span>Sub Item</span></a></li>
</ul>
</li>
<li class='has-sub'><a href='#'><span>Product 2</span></a>
<ul>
<li><a href='#'><span>Sub Item</span></a></li>
<li class='last'><a href='#'><span>Sub Item</span></a></li>
</ul>
</li>
</ul>
</li>
<li><a href='#'><span>About</span></a></li>
<li class='last'><a href='#'><span>Contact</span></a></li>
</ul>
</div>
</body>
</html>
身体向右增加,但不增加身体中的动态内容。
当将光标移到带有子元素的菜单元素上时,主体将恢复正常。