在div中垂直對齊跨度

Question

我正在嘗試使用Bootstrap 4的對齊幫助器類在div中垂直對齊內容“ ABC Company”。 但無法做到。 我正在使用以下代碼。

<div class="container" style="width: 740px;">
<div class="row">
  <div class="col-sm text-right" style="line-height: 20px; height: 20px; color:#004990; text-decoration:none; font-family:Helvetica, Arial, sans-serif; font-size:10px;">
      Your Account
  </div>
</div>
<div class="row">
  <div class="col-sm text-center" style="background-color:#0471AF; height:100px;">
    <span class="align-middle">ABC Company</span>
  </div>
</div>

請指出我想念的是什么！

Answer 1

設置display: flex; justify-content: center; align-items: center; display: flex; justify-content: center; align-items: center; 對於col-sm text-center 或 ，也可以設置display: flex; justify-content: center; display: flex; justify-content: center; 對於col-sm text-center和align-self: center; 對於<span> 。

 .col-sm.text-center { display: flex; justify-content: center; align-items: center; } 

 <link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet"/> <div class="container-fluid"> <style> </style> <div class="row"> <div class="col-sm text-right" style="line-height: 20px; height: 20px; color:#004990; text-decoration:none; font-family:Helvetica, Arial, sans-serif; font-size:10px;"> Your Account </div> </div> <div class="row"> <div class="col-sm text-center" style="background-color:#0471AF; height:100px;"> <span class="align-middle">ABC Company</span> </div> </div>