css 笔记：前端开发中的“居中”，绝对定位，transform和flex布局：4。相对绝对定位

Posted 2021-05-13

/* center by traditional relative/absolute position */
/* parent */
.box.box_centerByAbsolute {
 position: relative;
}

/* child */
.box.box_centerByAbsolute .content {
 position: absolute;
 top: 0;
 right: 0;
 bottom: 0;
 left: 0;
 margin: auto;
}