3列 高度自适应 文字上下左右居中

  <div class="pop-PayMod marT15 bor_t1">
    <div class="row webkit-box">
        <div class="col-xs-5 clearPadRight center">
            <p>卡费：¥ <label class="purpleColor">20</label></p>
            <p>邮费：¥ <label class="purpleColor">10</label></p>
        </div>
        <div class="col-xs-4 clearPad centerMidden" >总计：¥ <label class="purpleColor">20.00</label></div>
        <div class="col-xs-3 clearPadLeft purpleBg whiteColor centerMidden" >支付</div>
    </div>  
  </div>