`请输入代码`我想做多行字垂直居中
<body>
<div style="height:200px;width:400px;border:#99FF99 solid 1px;">
<span style="line-height:300px;vertical-align:middle;display:inline-block;">
fdfakdfkaldjfajdfjlajfdkaljfdlkajf;dla
sdfakfdjlajfdklajldfjajdf;jal;fjds;lf
adsfjkljdsfka;jdk;fjak;sdlfj;aldfjkl;
sdkfljld;fj;alsfdjalkjfdakdfjaisdfjie
</p>
</div>
</body>
<body>
<div style="display:table-cell;vertical-align:middle;height:200px;width:400px;border:#99FF99 solid 1px;text-align:center">
fdfakdfkaldjfajdfjlajfdkaljfdlkajf;dla
sdfakfdjlajfdklajldfjajdf;jal;fjds;lf
adsfjkljdsfka;jdk;fjak;sdlfj;aldfjkl;
sdkfljld;fj;alsfdjalkjfdakdfjaisdfjie
</div>
</body>
效果：http://jsfiddle.net/3dr6E/
参考：http://www.qianduan.net/css-to-achieve-the-vertical-center-of-the-five-kinds-of-methods.html