CSS 수직 센터링 구현 코드

.verticle{    height: 100px;    line-height: 100px;}

.container {  position: relative; 
}.vertical {  width : 300px; /*子元素的宽度*/
  height: 300px;  /*子元素高度*/
  position: absolute;  top:50%;  /*父元素高度50%*/
  left: 50%; 
  margin-left: -150px;  margin-top: -150px; /*自身高度一半*/}

.container {  position: relative; 
}.vertical {     position:absolute;     top: 50%;     left:50%;     transform:translate(-50%,-50%);}

.content{     display:flex;     justify-content: center; /*子元素水平居中*/
     align-items: center; /*子元素垂直居中*/}

.container {      display: table;}.content {      display: table-cell;      vertical-align: middle; }