1、flex布局
.father {
display: flex;
justify-content: center;
align-items: center;
}
这种方式兼容性不好
2、position + transform
.son {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
IE9以下不支持transform属性
3、table + table-cell
.father {
display: table;
}
.son {
display: table-cell;
vertical-align: middle;
text-align: center;
}
4、:before + display:inline-block
.father {
text-align: center;
}
.father::before {
content: '';
display: inline-block;
height: 100%;
vertical-align: middle;
}
.son {
display: inline-block;
}
原文地址：https://segmentfault.com/a/1190000021937088
