html - 在具有图像的按钮中垂直居中文本

Question

我有如下的 css 和 html。这里的文本和图像不在同一行。我希望两者都在同一行并垂直居中。

.online:before {
  content: url(http://www.dreamaion.com/img_icons/on.png);
}
.butt {
  margin: 0 auto;
  text-align: center;
  cursor: pointer;
  display: inline-block;
  background: #0d92d9;
  color: #ffffff;
  font-size: 22px;
  padding: 13px;
  text-decoration: none;
  margin: 22px 0px 22px 0px;
}

<div class="online butt">Download</div>
<br>

Answer 1

将以下设置添加到before 伪元素:

  vertical-align: middle;
  display: inline-block;

.online::before {
  content: url(http://www.dreamaion.com/img_icons/on.png);
  vertical-align: middle;
  display: inline-block;
}
.butt {
  margin: 0 auto;
  text-align: center;
  cursor: pointer;
  display: inline-block;
  background: #0d92d9;
  color: #ffffff;
  font-size: 22px;
  padding: 13px;
  text-decoration: none;
  margin: 22px 0px 22px 0px;
}

<div class="online butt">Download</div>
<br>