标签：origin get css 居中 lan bottom height absolute size
链接
.father {
width: 300px; height:150px;
position: relative;
}
.son {
position: absolute;
top: 0; right: 0; bottom: 0; left: 0;
}标签：origin get css 居中 lan bottom height absolute size
原文地址：https://www.cnblogs.com/chengfengchi/p/10659029.html
