[css片段]图片与多行文字垂直居中对齐

gistfile1.txt

<div class="alertify-content">
  <i class="alertify-icon glyphicon glyphicon-remove-circle"></i>
  上面标签可以是图片，也可以是图标，任意
</div>

.alertify-content {
  display: table;
}

.alertify-icon {
  vertical-align: middle;
  display: table-cell;
  width: 32px;
  font-size: 24px;
}