在同一行佈局的技巧

例如上面的佈局，咱們可使用裏面元素浮動，外面的div高度爲0的特色來佈局，使2個div重疊在一塊兒

    <div class="pretext1-nexttext1">
     <span class="pretext1" >無</span>
     <span class="nexttext1" >站點名稱2</span>
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     <span class="pre" style="z-index:100;"><img src="../../dist/img/left-jiantou.png" width="29"  /></span>
     <span class="next" style="z-index:100;"><img src="../../dist/img/right-jiantou.png" width="29" /></span>
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.pre{float:left;}
.next{float:right;}
.pretext1-nexttext1{ width:900px; margin:0 auto;font-size:20px;}
.pretext1{width:30%;float:left;text-align:right;padding-right:30px;}
.nexttext1{width:30%;float:right;text-align:left;padding-left:30px;}