右侧盒子内容根据左侧盒子高度的变化垂直居中

    <style>
    img {
        border: 0px none;
        vertical-align: middle;
    }
    .recipeStep .Step_img{
        width: 260px;
        display: inline-block;
    }
    .recipeStep .Step_img img {
        width: 220px;
        height: 100px;
        background: red;
    } 
    .recipeStep .Step_words{
        width: 370px;
        display: inline-block;
        vertical-align: middle;
        color: #666;
        font-size: 16px;
    }
    </style>
<div class="recipeStep">
    <div class="Step_words">
         <a href="javascript:;">123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890</a>
    </div>
    <div class="Step_img"><img src="http://i3.meishichina.com/attachment/recipe/201111/18/p320_201111181304588.JPG"></div>
</div>