<div class="input-group">
<span class="input-group-addon">email</span>
<input type="text" placeholder="xxxx">
</div>
Reproduced in: https: //www.jianshu.com/p/521a112b5b54
<div class="input-group">
<span class="input-group-addon">email</span>
<input type="text" placeholder="xxxx">
</div>
Reproduced in: https: //www.jianshu.com/p/521a112b5b54