全宽水平居中菜单和子菜单

时间：2014-08-23 20:41:54

标签： html css menu

我正在尝试使用子菜单创建菜单。我希望两个菜单都是水平，全宽和居中。这是否可能，如果是的话，是否有人对如何实现这一目标有任何建议？

提前致谢！

此代码创建了一个水平菜单和子菜单，但它们是左对齐的，我无法将它们全宽并且都居中。

HTML：

<div id="menu">

<ul id="nav">
<li><a href="#">Menu 1</a>
 <ul>
 <li><a href="#">Menu 1 Submenu item 1</a></li>
 <li><a href="#">Menu 1 Submenu item 2</a></li>
 <li><a href="#">Menu 1 Submenu item 3</a></li>
 </ul>
</li>

<li><a href="#">Menu 2</a>
 <ul>
 <li><a href="#">Menu 2 Submenu item 1</a></li>
 <li><a href="#">Menu 2 Submenu item 2</a></li>
 <li><a href="#">Menu 2 Submenu item 3</a></li>
 </ul>
</li>

<li><a href="#">Menu 3</a>
 <ul>
 <li><a href="#">Menu 3 Submenu item 1</a></li>
 <li><a href="#">Menu 3 Submenu item 2</a></li>
 <li><a href="#">Menu 3 Submenu item 3</a></li>
 </ul>
</li>

<li><a href="#">Menu 4</a>
 <ul>
 <li><a href="#">Menu 4 Submenu item 1</a></li>
 <li><a href="#">Menu 4 Submenu item 2</a></li>
 <li><a href="#">Menu 4 Submenu item 3</a></li>
 </ul>
</li>  
</ul>

</div>

CSS：

<style type="text/css">
#menu {
  width: 960px;
  height: 40px;
  clear: both;
}

ul#nav {
  float: left;
  width: 960px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: #dc0000 url(../img/menu-parent.png) repeat-x;
  -moz-border-radius-topright: 10px;
  -webkit-border-top-right-radius: 10px;
  -moz-border-radius-topleft: 10px;
  -webkit-border-top-left-radius: 10px;  
  text-align: center;
}

ul#nav li {
  display: inline;
}

ul#nav li a {
  float: left;
  font: bold 1.1em arial,verdana,tahoma,sans-serif;
  line-height: 40px;
  color: #fff;
  text-decoration: none;
  text-shadow: 1px 1px 1px #880000;
  margin: 0;
  padding: 0 30px;
  background: #dc0000 url(../img/menu-parent.png) repeat-x;
  -moz-border-radius-topright: 10px;
  -webkit-border-top-right-radius: 10px;
  -moz-border-radius-topleft: 10px;
  -webkit-border-top-left-radius: 10px;     
}

/* APPLIES THE ACTIVE STATE */
ul#nav .current a, ul#nav li:hover > a  {
  color: #fff;
  text-decoration: none;
  text-shadow: 1px 1px 1px #330000;
  background: #bb0000;
  -moz-border-radius-topright: 10px;
  -webkit-border-top-right-radius: 10px;
  -moz-border-radius-topleft: 10px;
  -webkit-border-top-left-radius: 10px; 
}

/* THE SUBMENU LIST HIDDEN BY DEFAULT */
ul#nav  ul {
  display: none;
}

/* WHEN THE FIRST LEVEL MENU ITEM IS HOVERED, THE CHILD MENU APPEARS */
 /* Sub menu UL */
ul#nav li:hover > ul {
  position: absolute;
  display: block;
  width: 920px;
  height: 45px;
  position: absolute;
  margin: 40px 0 0 0;
  background: #aa0000 url(../img/menu-child.png) repeat-x;  
  -moz-border-radius-bottomright: 10px;
  -webkit-border-bottom-right-radius: 10px;
  -moz-border-radius-bottomleft: 10px;
  -webkit-border-bottom-left-radius: 10px; 
}

 /* Sub menu link */
ul#nav li:hover > ul li a {
  float: left;
  font: bold 1.1em arial,verdana,tahoma,sans-serif;
  line-height: 45px;
  color: #fff;
  text-decoration: none;
  text-shadow: 1px 1px 1px #110000;
  margin: 0;
  padding: 0 30px 0 0;
  background: #aa0000 url(../img/menu-child.png) repeat-x; 
}

  /* Sub menu link hover */
ul#nav li:hover > ul li a:hover {
  color: #120000;
  text-decoration: none;
  text-shadow: none;
}
  </style>

1 个答案:

答案 0 :(得分：0)

检查this

我使用display: table; UL和display: table-cell li来调整菜单。

HTML 

<div id="menu">

<ul id="nav">
<li><a href="#">Menu 1</a>
 <div class="dropdown"><ul>
 <li><a href="#">Menu 1 Submenu item 1</a></li>
 <li><a href="#">Menu 1 Submenu item 2</a></li>
 <li><a href="#">Menu 1 Submenu item 3</a></li>
 </ul>
  </div>
</li>

<li><a href="#">Menu 2</a>
  <div class="dropdown">
 <ul>
 <li><a href="#">Menu 2 Submenu item 1</a></li>
 <li><a href="#">Menu 2 Submenu item 2</a></li>
 <li><a href="#">Menu 2 Submenu item 3</a></li>
 </ul>
    </div>
</li>

<li><a href="#">Menu 3</a>
<div class="dropdown"> <ul>
 <li><a href="#">Menu 3 Submenu item 1</a></li>
 <li><a href="#">Menu 3 Submenu item 2</a></li>
 <li><a href="#">Menu 3 Submenu item 3</a></li>
 </ul>
  </div>
</li>

<li><a href="#">Menu 4</a>
 <div class="dropdown"><ul>
 <li><a href="#">Menu 4 Submenu item 1</a></li>
 <li><a href="#">Menu 4 Submenu item 2</a></li>
 <li><a href="#">Menu 4 Submenu item 3</a></li>
 </ul>
  </div>
</li>  
</ul>

CSS 

#menu {
  width: 960px;
  height: 40px;
  clear: both;
  position: relative;
}

ul#nav {
  display: table;
  width: 960px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: #dc0000 url(../img/menu-parent.png) repeat-x;
  -moz-border-radius-topright: 10px;
  -webkit-border-top-right-radius: 10px;
  -moz-border-radius-topleft: 10px;
  -webkit-border-top-left-radius: 10px;  
  text-align: center;
}

ul#nav li {
  display: table-cell;
}

ul#nav li a {
  display: block;
  font: bold 1.1em arial,verdana,tahoma,sans-serif;
  line-height: 40px;
  color: #fff;
  text-decoration: none;
  text-shadow: 1px 1px 1px #880000;
  margin: 0;
  padding: 0 30px;
  background: #dc0000 url(../img/menu-parent.png) repeat-x;
  -moz-border-radius-topright: 10px;
  -webkit-border-top-right-radius: 10px;
  -moz-border-radius-topleft: 10px;
  -webkit-border-top-left-radius: 10px;     
}

/* APPLIES THE ACTIVE STATE */
ul#nav .current a, ul#nav li:hover > a  {
  color: #fff;
  text-decoration: none;
  text-shadow: 1px 1px 1px #330000;
  background: #bb0000;
  -moz-border-radius-topright: 10px;
  -webkit-border-top-right-radius: 10px;
  -moz-border-radius-topleft: 10px;
  -webkit-border-top-left-radius: 10px; 
}

/* THE SUBMENU LIST HIDDEN BY DEFAULT */
ul#nav  .dropdown {
  display: none;
  position: absolute;
  left: 0;
  top: 40px;
  width: 100%;
}
ul#nav  .dropdown ul {
  display: table;
  width: 100%;
  margin: 0;
  padding: 0;
}

/* WHEN THE FIRST LEVEL MENU ITEM IS HOVERED, THE CHILD MENU APPEARS */
 /* Sub menu UL */
ul#nav li:hover > .dropdown {

  display: block;

  background: #aa0000 url(../img/menu-child.png) repeat-x;  
  -moz-border-radius-bottomright: 10px;
  -webkit-border-bottom-right-radius: 10px;
  -moz-border-radius-bottomleft: 10px;
  -webkit-border-bottom-left-radius: 10px; 
}
ul#nav li > .dropdown a {
  padding: 3px 30px
}
 /* Sub menu link */
ul#nav li:hover > ul li a {
  font: bold 1.1em arial,verdana,tahoma,sans-serif;
  line-height: 45px;
  color: #fff;
  text-decoration: none;
  text-shadow: 1px 1px 1px #110000;
  margin: 0;
  padding: 0 30px 0 0;
  background: #aa0000 url(../img/menu-child.png) repeat-x; 
}

  /* Sub menu link hover */
ul#nav li:hover > ul li a:hover {
  color: #120000;
  text-decoration: none;
  text-shadow: none;
}
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