CSS 中心div在另一个div

Posted 2021-05-23

#wrapper {
  position:relative;
}
#centeredBox {
  position:absolute;
  top: 50%;
  left: 50%;
  width:200px;
  height:300px;
  margin-left: -100px; /*1/2 width*/
  margin-top: -150px; /*1/2 of height*/
}