html - 如何将我的下拉菜单对齐到页面中心？

Question

因此，如果您想查看我的菜单，请前往 here .

因为我知道你会想要我的源代码，所以这是 HTML:

<div id='menu-container'>
<ul id='menu' class="menu">
   <li class='active'><a href='/'><span>Home</span></a></li>
   <li class='has-sub'><a href='/games/'><span>Games</span></a>
      <ul>
         <li><a href='/games/dota-2/'><span>Dota 2</span></a></li>
         <li><a href='/games/cs-go/'><span>CS: GO</span></a></li>
         <li><a href='/games/css/'><span>CS: Source</span></a></li>
         <li><a href='/games/terraria/'><span>Terraria</span></a></li>
         <li class='last'><a href='/games/minecraft/'><span>Minecraft</span></a></li>
      </ul>
   </li>
   <li class='has-sub'><a href='/about.html'><span>About Us</span></a>
      <ul> 
         <li><a href='http://www.youtube.com/user/'><span>Our YouTube Channel</span></a></li>
         <li><a href='/faq-list.html'><span>Our FAQs/Q&amp;A List</span></a></li>
         <li><a href='/feed-news.rss'><span>Our RSS Feed</span></a></li>
         <li><a href='/wiki/'><span>Our Wiki</span></a></li>
         <li><a href='/wiki/'><span>Our Blog</span></a></li>
                 <li class='last'><a href='/privacy.html'><span>Privacy Policy</span></a></li>
      </ul>
   </li>
   <li class='has-sub last'><a href='/contact.html'><span>Contact Us</span></a>
      <ul>
         <li class='last'><a href='/forums/'><span>Forums</span></a></li>
      </ul>
   </li>
</ul>

这是我的 CSS:

* {
margin: 0px;
}
#menu-container ul,
#menu-container li,
#menu-container span,
#menu-container a {
  margin: 0;
  padding: 0;
  position: relative;
}
#menu-container {
  height: 49px;
  border-radius: 0px 0px 0 0;
  -moz-border-radius: 0px 0px 0 0;
  -webkit-border-radius: 0px 0px 0 0;
  background: #141414;
  background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAxCAIAAACUDVRzAAAAA3NCSVQICAjb4U/gAAAALElEQVQImWMwMrJi+v//PxMDw3+m//8ZoPR/qBgDEhuXGLoeYswhXg8R5gAAdVpfoJ3dB5oAAAAASUVORK5CYII=) 100% 100%; 
  background: -moz-linear-gradient(top, #32323a 0%, #141414 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #32323a), color-stop(100%, #141414));
  background: -webkit-linear-gradient(top, #32323a 0%, #141414 100%);
  background: -o-linear-gradient(top, #32323a 0%, #141414 100%);
  background: -ms-linear-gradient(top, #32323a 0%, #141414 100%);
  background: linear-gradient(to bottom, #32323a 0%, #141414 100%);
  border-bottom: 2px solid #0fa1e0;
}
#menu-container:after,
#menu-container ul:after {
  content: '';
  display: block;
  clear: both;
}
#menu-container a {
  background: #141414;
  background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAxCAIAAACUDVRzAAAAA3NCSVQICAjb4U/gAAAALElEQVQImWMwMrJi+v//PxMDw3+m//8ZoPR/qBgDEhuXGLoeYswhXg8R5gAAdVpfoJ3dB5oAAAAASUVORK5CYII=) 100% 100%; 
  background: -moz-linear-gradient(top, #32323a 0%, #141414 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #32323a), color-stop(100%, #141414));
  background: -webkit-linear-gradient(top, #32323a 0%, #141414 100%);
  background: -o-linear-gradient(top, #32323a 0%, #141414 100%);
  background: -ms-linear-gradient(top, #32323a 0%, #141414 100%);
  background: linear-gradient(to bottom, #32323a 0%, #141414 100%);
  color: #ffffff;
  display: inline-block;
  font-family: Helvetica, Arial, Verdana, sans-serif;
  font-size: 12px;
  line-height: 49px;
  padding: 0 20px;
  text-decoration: none;
}
#menu-container ul {
  list-style: none;
}
#menu-container > ul {
  float: left;
}
#menu-container > ul > li {
  float: left;
}
#menu-container > ul > li:hover:after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  position: absolute;
  left: 50%;
  bottom: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 10px solid #0fa1e0;
  margin-left: -10px;
}
#menu-container > ul > li:first-child > a {
  border-radius: 0px 0 0 0;
  -moz-border-radius: 0px 0 0 0;
  -webkit-border-radius: 0px 0 0 0;
}
#menu-container > ul > li:last-child > a {
  border-radius: 0 0px 0 0;
  -moz-border-radius: 0 0px 0 0;
  -webkit-border-radius: 0 0px 0 0;
}
#menu-container > ul > li.active > a {
  box-shadow: inset 0 0 3px #000000;
  -moz-box-shadow: inset 0 0 3px #000000;
  -webkit-box-shadow: inset 0 0 3px #000000;
  background: #070707;
  background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAxCAIAAACUDVRzAAAAA3NCSVQICAjb4U/gAAAALklEQVQImWNQU9Nh+v//PxMDw3+m//8ZkNj/mRgYIHxy5f//Z0BSi18e2TwS5QG4MGB54HL+mAAAAABJRU5ErkJggg==) 100% 100%; 
  background: -moz-linear-gradient(top, #26262c 0%, #070707 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #26262c), color-stop(100%, #070707));
  background: -webkit-linear-gradient(top, #26262c 0%, #070707 100%);
  background: -o-linear-gradient(top, #26262c 0%, #070707 100%);
  background: -ms-linear-gradient(top, #26262c 0%, #070707 100%);
  background: linear-gradient(to bottom, #26262c 0%, #070707 100%);
}
#menu-container > ul > li:hover > a {
  background: #070707;
  background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAxCAIAAACUDVRzAAAAA3NCSVQICAjb4U/gAAAALklEQVQImWNQU9Nh+v//PxMDw3+m//8ZkNj/mRgYIHxy5f//Z0BSi18e2TwS5QG4MGB54HL+mAAAAABJRU5ErkJggg==) 100% 100%; 
  background: -moz-linear-gradient(top, #26262c 0%, #070707 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #26262c), color-stop(100%, #070707));
  background: -webkit-linear-gradient(top, #26262c 0%, #070707 100%);
  background: -o-linear-gradient(top, #26262c 0%, #070707 100%);
  background: -ms-linear-gradient(top, #26262c 0%, #070707 100%);
  background: linear-gradient(to bottom, #26262c 0%, #070707 100%);
  box-shadow: inset 0 0 3px #000000;
  -moz-box-shadow: inset 0 0 3px #000000;
  -webkit-box-shadow: inset 0 0 3px #000000;
}
#menu-container .has-sub {
  z-index: 1;
}
#menu-container .has-sub:hover > ul {
  display: block;
}
#menu-container .has-sub ul {
  display: none;
  position: absolute;
  width: 200px;
  top: 100%;
  left: 0;
}
#menu-container .has-sub ul li {
  *margin-bottom: -1px;
}
#menu-container .has-sub ul li a {
  background: #0fa1e0;
  border-bottom: 1px dotted #6fc7ec;
  filter: none;
  font-size: 11px;
  display: block;
  line-height: 120%;
  padding: 10px;
}
#menu-container .has-sub ul li:hover a {
  background: #0c7fb0;
}
#menu-container .has-sub .has-sub:hover > ul {
  display: block;
}
#menu-container .has-sub .has-sub ul {
  display: none;
  position: absolute;
  left: 100%;
  top: 0;
}
#menu-container .has-sub .has-sub ul li a {
  background: #0c7fb0;
  border-bottom: 1px dotted #6db2d0;
}
#menu-container .has-sub .has-sub ul li a:hover {
  background: #095c80;
}
#menu-container {
-moz-box-shadow: 0 0 10px #888;
-webkit-box-shadow: 0 0 10px #888;
box-shadow: 0 0 10px #888;
}

很多，但如果我不给它你会报告我那么如何将菜单对齐到我的页面的中心(因为我没有编码，这是我的 friend )？而且我也只想要菜单，没有空白的灰色空间。可能吗？

Answer 1

这里是 a fiddle向您展示如何将菜单对齐到屏幕中心。您可以通过搜索“已编辑”来搜索我在 css 中所做的更改。我以这种方式标记了所有 3 个更改。

这是我做的。

1.去掉整个菜单向左浮动的规则:

#menu-container > ul {
    float: left;
}

2.在他的父元素上指定你想让它在页面的中心:

#menu-container {text-align:center;}

3.然后对于每个菜单元素，更改以下规则:

#menu-container > ul > li {
    float: left;
}

到

#menu-container > ul > li {
    display: inline-block;
}

关于你最后一个问题(我也只想要菜单，没有空白的灰色区域)，我不明白你的意思。您想从菜单栏中移除灰色吗？