10-1 個別項目的垂直對齊

1. 請寫在各個<div>中即可：

   <div class="container">
       <div class="row">
           <div class="col align-self-start">垂直靠上</div>
           <div class="col align-self-center">垂直置中</div>
           <div class="col align-self-end">垂直靠下</div>
       </div>
   </div>

2. 詳情：http://bootstrap.hexschool.com/docs/4.0/layout/grid/#%E5%9E%82%E7%9B%B4%E5%B0%8D%E9%BD%8A
3. 範例：

   See the Pen 個別項目的垂直對齊 by Tad (@tad0616) on CodePen.