水平居中方案4

table + margin

by DarcyAn

HTML

<div class="parent">
<div class="child">
child
</div>
</div>

CSS

.parent {
  background: pink;
  height: 100px;
}
.child {
  display: table;
  margin: 0 auto;
  padding:10px;
  background: #eee;
  height: 80px;
  line-height: 80px;
}