Html 使用纯 css 向上/向上打开的下拉菜单
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时间：2020-08-29 11:10:30 来源:igfitidea点击:
Drop-down menu that opens up/upward with pure css
提问by greysuit
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"?
我用纯 CSS 创建了一个下拉菜单，我把它放到了一个我喜欢的地方，除了我希望它是“下拉”而不是“下拉”，因为菜单栏在底部布局。我需要添加或更改什么才能使其“下拉”？
#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;
}<div id="menu">
<ul>
<li><center><a href="X">Home</a></center>
<ul>
<li><a href="#">About Us</a></li>
<li><a href="#">Disclaimer</a></li>
</ul>
</li>
<li>
<center><a href="#">Practice Areas</a></center>
<ul>
<li><a href="#">Civil Law</a></li>
<li><a href="#">Criminal Law ›</a>
<ul>
<li><a href="#">Joomla</a></li>
<li><a href="#">Drupal</a></li>
<li><a href="#">Wordpress</a></li>
</ul>
<li><a href="#">Family Law ›</a>
<ul>
<li><a href="#">Joomla</a></li>
<li><a href="#">Drupal</a></li>
<li><a href="#">Wordpress</a></li>
</ul>
<li><a href="#">Personal Injury ›</a>
<ul>
<li><a href="#">Joomla</a></li>
<li><a href="#">Drupal</a></li>
<li><a href="#">Wordpress</a></li>
</ul>
<li><a href="#">Traffic Offenses ›</a>
<ul>
<li><a href="#">Joomla</a></li>
<li><a href="#">Drupal</a></li>
<li><a href="#">Wordpress</a></li>
</ul>
<li><a href="#">FAQ</a> </li>
</ul>
</li>
<li><center><a href="#">Attorney</a></center>
<ul>
<li><a href="#">X</a></li>
<li><a href="#">X</a></li>
<li><a href="#">X</a></li>
<li><a href="#">X</a></li>
</ul>
</li>
<li><center><a href="#">Contact Us</a></center>
<ul>
<li><a href="#">Locations ›</a>
<ul>
<li><a href="#">Rockville Office</a></li>
<li><a href="#">Frederick Office</a></li>
<li><a href="#">Greenbelt Office</a></li>
</ul>
<li><a href="#">Phone Directory</a></li>
<li><a href="#">Mailing Address</a></li>
</ul>
</li>
<li><center><a href="#">Resources</a></center>
<ul>
<li><a href="#">Helpful Links</a></li>
<li><a href="#">Affiliates ›</a>
<ul>
<li><a href="#">Healthcare Providers</a></li>
<li><a href="#">Insurance Companies</a></li>
</ul>
</li></ul>
<li><center><a href="#">News & Events</a></center>
<ul>
<li><a href="#">Press Articles</a></li>
<li><a href="#">Newsletter</a></li>
<li><a href="#">Events</a></li>
<li><a href="#">Blog</a></li>
</ul>
<li><center><a href="#">Espanol</a></center>
<ul>
<li><a href="#">X</a></li>
</ul>
</ul>
</div>回答by Joseph Marikle
Add bottom:100%to your #menu:hover ul li:hover ulrule
添加bottom:100%到您的#menu:hover ul li:hover ul规则
Demo 1
演示 1
#menu:hover ul li:hover ul {
position: absolute;
margin-top: 1px;
font: 10px;
bottom: 100%; /* added this attribute */
}
Or better yet to prevent the submenus from having the same effect, just add this rule
或者更好地防止子菜单具有相同的效果，只需添加此规则
Demo 2
演示 2
#menu>ul>li:hover>ul {
bottom:100%;
}
Demo 3
演示 3
source: http://jsfiddle.net/W5FWW/4/
来源：http: //jsfiddle.net/W5FWW/4/
And to get back the border you can add the following attribute
为了取回边框，您可以添加以下属性
#menu>ul>li:hover>ul {
bottom:100%;
border-bottom: 1px solid transparent
}
回答by Rohit Parte
If we are use chosen dropdown list, then we can use below css(No JS/JQuery require)
如果我们使用选择的下拉列表，那么我们可以使用下面的 css（不需要 JS/JQuery）
<select chosen="{width: '100%'}" ng-
model="modelName" class="form-control input-
sm"
ng-
options="persons.persons as
persons.persons for persons in
jsonData"
ng-
change="anyFunction(anyParam)"
required>
<option value=""> </option>
</select>
<style>
.chosen-container .chosen-drop {
border-bottom: 0;
border-top: 1px solid #aaa;
top: auto;
bottom: 40px;
}
.chosen-container.chosen-with-drop .chosen-single {
border-top-left-radius: 0px;
border-top-right-radius: 0px;
border-bottom-left-radius: 5px;
border-bottom-right-radius: 5px;
background-image: none;
}
.chosen-container.chosen-with-drop .chosen-drop {
border-bottom-left-radius: 0px;
border-bottom-right-radius: 0px;
border-top-left-radius: 5px;
border-top-right-radius: 5px;
box-shadow: none;
margin-bottom: -16px;
}
</style>
