伪类 after、before、hover

css代码使用的是预编译less，
简单分析：就是固定框200*200，设定超出不显示，在div同时放入两张图片，通过margin的方式进行切换，效果由transition属性，显得较为平滑

.all_size(@width:200px,@height:200px) {  width: @width;  he陈羽凡个人资料ight: @height;}.img_style(@url) {  .all_size();  content: "";  display: inline-block;  background-size: contain;  background: url(@url) no-repeat center;}.img {  .all_size();  dis背诵play: inline-block;  overflow: hidden; .img_list {    .all亚马逊海淘攻略_size(400px,200px);    display: inline-block; &::before {      .img_style("../asts/imgaes/1.jpg");      transition: margin 0.2s;    }    &::after {      .img_style("../asts/imgaes/2.jpg");    }    &:hover::before {      margin-left: -400px;      transition: margin 0.2s;    }  }}

<div class="img">   <div class="img_list"></div></div>

如果看不懂less，就。。。

.img {  display: inline-block;  width: 200px;  height: 200px;  overflow: hidden;}.img梅汝璈_list {  display: inline-block;  width: 400px;  height: 200px;}.img_list::before {  content: "";  display: inline-block;  width: 200px;  height: 200px;  background: url("../asts/imgaes/1.jpg") no-repeat center;  background-size: contain;  transition: margin 0.2s;}.img_list::after {  content: "";  display: inl表白女生ine-block;  width: 200px;  height: 200px;  background: url("../asts/imgaes/2.jpg") no-repeat center;  background-size: contain;}.img_list:hover::before {  margin-left: -400px;  transition: margin 0.2s;}

本文地址：https://blog.csdn.net/weixin_45019566/article/details/107545589