1
美好的一天，每個人！嵌入樹圖的中間
對不起我的英文不好的語言
我怎樣才能把這個圖表樹在中間的屏幕的？
我正在使用Twitter Bootstrap。
這是我的HTML和CSS代碼：
* {margin: 0; padding: 0;}
.tree ul {
\t padding-top: 20px; position: relative;
\t font-family:'B Yekan', tahoma, Arial;font-size:12px;
\t transition: all 0.5s;
\t -webkit-transition: all 0.5s;
\t -moz-transition: all 0.5s;
}
.tree li {
\t float: left; text-align: center;
\t list-style-type: none;
\t position: relative;
\t padding: 20px 5px 0 5px;
\t
\t transition: all 0.5s;
\t -webkit-transition: all 0.5s;
\t -moz-transition: all 0.5s;
}
.tree li::before, .tree li::after{
\t content: '';
\t position: absolute; top: 0; right: 50%;
\t border-top: 1px solid #ccc;
\t width: 50%; height: 20px;
}
.tree li::after{
\t right: auto; left: 50%;
\t border-left: 1px solid #ccc;
}
.tree li:only-child::after, .tree li:only-child::before {
\t display: none;
}
.tree li:only-child{ padding-top: 0;}
.tree li:first-child::before, .tree li:last-child::after{
\t border: 0 none;
}
.tree li:last-child::before{
\t border-right: 1px solid #ccc;
\t border-radius: 0 5px 0 0;
\t -webkit-border-radius: 0 5px 0 0;
\t -moz-border-radius: 0 5px 0 0;
}
.tree li:first-child::after{
\t border-radius: 5px 0 0 0;
\t -webkit-border-radius: 5px 0 0 0;
\t -moz-border-radius: 5px 0 0 0;
}
.tree ul ul::before{
\t content: '';
\t position: absolute; top: 0; left: 50%;
\t border-left: 1px solid #ccc;
\t width: 0; height: 20px;
}
.tree li a{
\t border: 1px solid #ccc;
\t padding: 5px 10px;
\t text-decoration: none;
\t color: #666;
\t display: inline-block;
\t
\t border-radius: 5px;
\t -webkit-border-radius: 5px;
\t -moz-border-radius: 5px;
\t
\t transition: all 0.5s;
\t -webkit-transition: all 0.5s;
\t -moz-transition: all 0.5s;
}
.tree li a:hover, .tree li a:hover+ul li a {
\t background: #c8e4f8; color: #000; border: 1px solid #94a0b4;
}
.tree li a:hover+ul li::after,
.tree li a:hover+ul li::before,
.tree li a:hover+ul::before,
.tree li a:hover+ul ul::before{
\t border-color: #94a0b4;
}<div class="tree">
<ul>
<li><a href="#">main</a>
<ul>
<li>
<a href="#">row2</a>
<ul>
<li>
<a href="#">row3</a>
</li>
<li>
<a href="#">row3</a>
</li></ul></li>
<li><a href="#">row2</a>
<ul>
<li><a href="#">row3</a>
</li>
<li><a href="#">row3</a>
<ul>
<li><a href="#">row4</a>
</li>
<li><a href="#">row4</a>
</li>
<li><a href="#">row4</a>
</li></ul></li></ul></li></ul></li></ul></div>我怎樣才能把這個圖表樹在中間的屏幕的？