css样式让input垂直居中

css样式让input垂直居中

css代码：

 .div1{
            border: 1px solid #CCC;
            width:1120px;
            height:40px;
            margin:auto;
            display: table;
            *position: relative;
            overflow: hidden;
        }
        .div2 {
            vertical-align: middle;
            display: table-cell;
            *position: absolute;
            *top: 50%;
        }
        .div3 {
            *position: relative;
            *top: -50%;
            float:right;
            padding-right:10px;
        }

html代码：

<div class="div1">
    <div class="div2">
        <div class="div3">
            <input type="text" size="30">
        </div>
    </div>
</div>