使用纯CSS打开/向上的下拉菜单 [英] Drop-down menu that opens up/upward with pure css
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问题描述
我已经创建了一个纯CSS的下拉菜单，我已经得到了一个我喜欢的地方，除了我想要它是下拉而不是下拉，因为菜单栏正在底部的布局。我需要添加或更改以使其下拉？
I've created a dropdown menu with pure CSS and I've gotten it to a place that I like except I want it to be "drop-up" not "drop-down" since the menu bar is going at the bottom of the layout. What I need to add or change to make it "drop-up"?
#menu * {
padding:0;
margin: 0;
font: 12px georgia;
list-style-type:none;
}
#menu {
margin-top: 100px;
float: left;
line-height: 10px;
left: 200px;
}
#menu a {
display: block;
text-decoration: none;
color: #3B5330;
}
#menu a:hover { background: #B0BD97;}
#menu ul li ul li a:hover {
background: #ECF1E7;
padding-left:9px;
border-left: solid 1px #000;
}
#menu ul li ul li {
width: 140px;
border: none;
color: #B0BD97;
padding-top: 3px;
padding-bottom:3px;
padding-left: 3px;
padding-right: 3px;
background: #B0BD97;
}
#menu ul li ul li a {
font: 11px arial;
font-weight:normal;
font-variant: small-caps;
padding-top:3px;
padding-bottom:3px;
}
#menu ul li {
float: left;
width: 146px;
font-weight: bold;
border-top: solid 1px #283923;
border-bottom: solid 1px #283923;
background: #979E71;
}
#menu ul li a {
font-weight: bold;
padding: 15px 10px;
}
#menu li {
position:relative;
float:left;
}
#menu ul li ul, #menu:hover ul li ul, #menu:hover ul li:hover ul li ul {
display:none;
list-style-type:none;
width: 140px;
}
#menu:hover ul, #menu:hover ul li:hover ul, #menu:hover ul li:hover ul li:hover ul {
display:block;
}
#menu:hover ul li:hover ul li:hover ul {
position: absolute;
margin-left: 145px;
margin-top: -22px;
font: 10px;
}
#menu:hover ul li:hover ul {
position: absolute;
margin-top: 1px;
font: 10px;
}
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推荐答案
将底部：100％添加到 #menu：hover ul li：hover ul rule
#menu:hover ul li:hover ul {
position: absolute;
margin-top: 1px;
font: 10px;
bottom: 100%; /* added this attribute */
}
或更好地防止子菜单具有相同的效果，只需添加此规则
Or better yet to prevent the submenus from having the same effect, just add this rule
#menu>ul>li:hover>ul {
bottom:100%;
}
演示3
源： http://jsfiddle.net/W5FWW/4/
而且返回边框您可以添加以下属性
And to get back the border you can add the following attribute
#menu>ul>li:hover>ul {
bottom:100%;
border-bottom: 1px solid transparent
}
这篇关于使用纯CSS打开/向上的下拉菜单的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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