html - 垂直居中 Font Awesome 图标

Question

我正在尝试创建一个可重复使用的框，其中包含一个删除和编辑按钮作为框的一部分。但是，无论我尝试什么，我都无法使图标水平居中。

.inputBox .content {
  flex: 2;
}

.inputBox .icon {
  flex: 1;
  max-width: 50px;
}

<link href="http://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" rel="stylesheet" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<div>
  <div class="inputBox d-flex">
    <div class="bg-dark text-white rounded-left p-2 content align-middle">
      <input name="text" placeholder="This is a test" />
      <span>Link text</span>
      <br /> test<br />
    </div>
    <a href="#" class="bg-info text-white p-2 icon">
      <i class="fa fa-edit fa-lg"></i>
    </a>
    <a href="#" class="bg-danger text-white p-2 icon rounded-right">
      <span>
        <i class="fa fa-trash fa-lg"></i>
    </span>
    </a>
  </div>
</div>

Answer 1

应用 display:flex , align-items:center , justify-content:center 到 .icon 类...

...或使用 d-flex align-items-center justify-content-center 在 .icon 中引导预定义类

堆栈片段

.inputBox .content {
  flex: 2;
}

.inputBox .icon {
  flex: 1;
  max-width: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<div>
  <div class="inputBox d-flex">
    <div class="bg-dark text-white rounded-left p-2 content align-middle">
      <input name="text" placeholder="This is a test" />
      <span>Link text</span>
      <br /> test<br />
    </div>
    <a href="#" class="bg-info text-white p-2 icon">
      <i class="fa fa-edit fa-lg"></i>
    </a>
    <a href="#" class="bg-danger text-white p-2 icon rounded-right">
      <span>
        <i class="fa fa-trash fa-lg"></i>
    </span>
    </a>
  </div>
</div>