我是编码的新手,在下拉菜单工作时遇到了一些麻烦。
当我的光标悬停在相应的标签上时,菜单会正确下降,但是一旦我将光标向下移动到实际的下拉子类别,它们就会消失。
这是标签的CSS:
#cssmenu {
position: relative;
height: 44px;
background: #1d309e;
width: auto;
z-index: 100;
}
#cssmenu ul {
list-style: none;
padding: 0;
margin: 0;
line-height: 1;
}
#cssmenu > ul {
position: relative;
display: block;
background: #1d309e;
height: 32px;
width: 100%;
z-index: 99;
text-transform:lowercase;
}
#cssmenu > ul > li {
display: block;
position: relative;
float: left;
margin: 0;
padding: 0;
font-family: tahoma, "Trebuchet MS", verdana, helvetica, arial, sans-serif;
text-transform:lowercase
z-index: 100
}
#cssmenu > ul > #menu-button {
display: none;
}
#cssmenu ul li a {
display: block;
font-family: tahoma, "Trebuchet MS", verdana, helvetica, arial, sans-serif;
text-decoration: none;
text-transform:lowercase
}
#cssmenu > ul > li > a {
font-size: 15px;
padding: 0px 80px;
color: #ffffff;
-webkit-transition: color 0.25s ease-out;
-moz-transition: color 0.25s ease-out;
-ms-transition: color 0.25s ease-out;
-o-transition: color 0.25s ease-out;
transition: color 0.25s ease-out;
text-transform:lowercase
}
#cssmenu > ul > li.has-sub > a {
padding-right: 32px;
}
#cssmenu > ul > li:hover > a {
color: #fff203;
}
#cssmenu li.has-sub::after {
display: block;
content: '';
position: absolute;
width: 0;
height: 0;
z-index: 100
}
#cssmenu > ul > li.has-sub::after {
right: 10px;
top: 20px;
border: 5px solid transparent;
border-top-color: #ffffff;
}
#cssmenu > ul > li:hover::after {
border-top-color: #fff203;
}
#indicatorContainer {
position: absolute;
height: 12px;
width: 100%;
bottom: 0px;
overflow: hidden;
z-index: 100;
}
#pIndicator {
position: absolute;
height: 0;
width: 100%;
border: 12px solid transparent;
border-top-color: #2b2f3a;
z-index: 100;
-webkit-transition: left .25s ease;
-moz-transition: left .25s ease;
-ms-transition: left .25s ease;
-o-transition: left .25s ease;
transition: left .25s ease;
}
#cIndicator {
position: absolute;
height: 0;
width: 100%;
border: 12px solid transparent;
border-top-color: #2b2f3a;
top: -12px;
right: 100%;
z-index: 100;
}
#cssmenu ul ul {
position: absolute;
left: -9999px;
top: 70px;
opacity: 0;
-webkit-transition: opacity .3s ease, top .25s ease;
-moz-transition: opacity .3s ease, top .25s ease;
-ms-transition: opacity .3s ease, top .25s ease;
-o-transition: opacity .3s ease, top .25s ease;
transition: opacity .3s ease, top .25s ease;
z-index: 100;
}
#cssmenu ul ul ul {
top: 37px;
padding-left: 5px;
}
#cssmenu ul ul li {
position: relative;
z-index: 100
}
#cssmenu > ul > li:hover > ul {
left: auto;
top: 44px;
opacity: 1;
}
#cssmenu ul ul li:hover > ul {
left: 170px;
top: 0;
opacity: 1;
}
#cssmenu ul ul li a {
width: 130px;
border-bottom: 1px solid #eee;
padding: 10px 20px;
font-size: 12px;
color: #1d309e;
background: #fff;
-webkit-transition: all .35s ease;
-moz-transition: all .35s ease;
-ms-transition: all .35s ease;
-o-transition: all .35s ease;
transition: all .35s ease;
}
#cssmenu ul ul li:hover > a {
background: #f6f6f6;
color: #ffee00;
}
#cssmenu ul ul li:last-child > a,
#cssmenu ul ul li.last > a {
border-bottom: 0;
}
.submenuArrow {
border: 6px solid transparent;
width: 0;
height: 0;
border-bottom-color: #fff;
position: absolute;
top: -12px;
}
#cssmenu ul ul li.has-sub::after {
border: 4px solid transparent;
border-left-color: #1d309e;
right: 10px;
top: 12px;
-moz-transition: all .2s ease;
-ms-transition: all .2s ease;
-o-transition: all .2s ease;
transition: all .2s ease;
-webkit-transition: -webkit-transform 0.2s ease, right 0.2s ease;
}
#cssmenu ul ul li.has-sub:hover::after {
border-left-color: #fff;
right: -5px;
-webkit-transform: rotateY(180deg);
-ms-transform: rotateY(180deg);
-moz-transform: rotateY(180deg);
-o-transform: rotateY(180deg);
transform: rotateY(180deg);
}
@media all and (max-width: 800px), only screen and (-webkit-min-device-pixel-ratio: 2) and (max-width: 1024px), only screen and (min--moz-device-pixel-ratio: 2) and (max-width: 1024px), only screen and (-o-min-device-pixel-ratio: 2/1) and (max-width: 1024px), only screen and (min-device-pixel-ratio: 2) and (max-width: 1024px), only screen and (min-resolution: 192dpi) and (max-width: 1024px), only screen and (min-resolution: 2dppx) and (max-width: 1024px) {
#cssmenu {
width: auto;
}
#cssmenu ul {
width: auto;
}
#cssmenu .submenuArrow,
#cssmenu #indicatorContainer {
display: none;
}
#cssmenu > ul {
height: auto;
display: block;
}
#cssmenu > ul > li {
float: none;
}
#cssmenu li,
#cssmenu > ul > li {
display: none;
}
#cssmenu ul ul,
#cssmenu ul ul ul,
#cssmenu ul > li:hover > ul,
#cssmenu ul ul > li:hover > ul {
position: relative;
left: auto;
top: auto;
opacity: 1;
padding-left: 0;
z-index: 100
}
#cssmenu ul .has-sub::after {
display: none;
}
#cssmenu ul li a {
padding: 12px 20px;
}
#cssmenu ul ul li a {
border: 0;
background: none;
width: auto;
padding: 8px 35px;
}
#cssmenu ul ul li:hover > a {
background: none;
color: #ffee00;
}
#cssmenu ul ul ul a {
padding: 8px 50px;
}
#cssmenu ul ul ul ul a {
padding: 8px 65px;
}
#cssmenu ul ul ul ul ul a {
padding: 8px 80px;
}
#cssmenu ul ul ul ul ul ul a {
padding: 8px 95px;
}
#cssmenu > ul > #menu-button {
display: block;
cursor: pointer;
}
#cssmenu #menu-button > a {
padding: 14px 20px;
}
#cssmenu ul.open li,
#cssmenu > ul.open > li {
display: block;
}
#cssmenu > ul.open > li#menu-button > a {
color: #fff;
border-bottom: 1px solid rgba(150, 150, 150, 0.1);
}
#cssmenu #menu-button::after {
display: block;
content: '';
position: absolute;
height: 3px;
width: 22px;
border-top: 2px solid #ffffff;
border-bottom: 2px solid #ffffff;
right: 20px;
top: 15px;
z-index: 100
}
#cssmenu #menu-button::before {
display: block;
content: '';
position: absolute;
height: 3px;
width: 22px;
border-top: 2px solid #ffffff;
right: 20px;
top: 25px;
z-index: 100
}
#cssmenu ul.open #menu-button::after,
#cssmenu ul.open #menu-button::before {
border-color: #fff;
}
}
这是我试图点击的HTML页面:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8' />
<meta http-equiv='X-UA-Compatible' content='IE=edge,chrome=1' />
<link rel='stylesheet' type='text/css' href='styles.css' />
<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js'>
</script>
<script type='text/javascript' src='menu_jquery.js'></script>
</head>
<body>
<h1>Sugar Mule</h1>
<div id='cssmenu'>
<ul>
<li class='active'><a href='index.html'><span>Home</span></a></li>
<li class='has-sub'><a href='about.html'><span>About</span></a>
<ul>
<li><a href='why.html'><span>Why Sugar Mule?</span></a></li>
<li><a href='staff.html'><span>Staff</span></a></li>
<li class='last'><a href='contact.html'><span>Contact</span></a></li>
</ul>
</li>
<li><a href='issues.html'><span>Issues</span></a></li>
<li><a href='books.html'><span>Books</span></a></li>
<li><a href='submit.html'><span>Submit</span></a></li>
<li class='last'><a href='links.html'><span>Links</span></a></li>
</ul>
</div>
<center><img src="logo.png" alt="Logo" width="700" height="450"></center>
</body>
</html>
提前感谢您的帮助!
答案 0 :(得分:0)
因为下拉列表#cssmenu > ul > li:hover > ul
的最高偏移量为44px
。
然后,您必须确保所有顶级链接#cssmenu > ul > li > a
至少为44px
继承人推荐的CSS
#cssmenu > ul > li > a {
...
min-height:44px;
...
}