Left align and right align within div in Bootstrap

我使用 row 來放欄位，預設是置左，似乎文字置右會好看一點點，中間比較不會留白那麼多。解法：

Use the pull-right class..

<div class="container">
  <div class="row">
    <div class="col-md-6">Total cost</div>
    <div class="col-md-6"><span class="pull-right">$42</span></div>
  </div>
</div>

Demo

You can also use the text-right class like this:

  <div class="row">
    <div class="col-md-6">Total cost</div>
    <div class="col-md-6 text-right">$42</div>
  </div>

Demo

2017 – Update for Bootstrap 4

• pull-right is now float-right
• text-right is the same as 3.x
• both float-* and text-* are responsive for different alignment at different widths (ie: float-sm-right)

Also, the flexbox utils can be used for alignment:

<div class="d-flex justify-content-between">
      <div>
         left
      </div>
      <div>
         right
      </div>
 </div>

Bootstrap 4 Align Demo