li:hover {
z-index: 1;
color: #fff;
li:hover::before {
width: 100%;
场景二:css实现背景色从左往右自动刷
实现思路:思路与场景一相似,也是通过before伪类复制一个盒子,通过transition实现,只不过这里加了一个自动播放的动画效果。
.box::after {
content: '';
position: absolute;
left: 0;
top: 0;
bottom: 0;
right: 0;
transition: 0.3s;
opacity: 0.3;
border-radius: 8px;
background: rgb(180, 17, 17);
transform-origin: left;
animation: LeftToRight 3s infinite;
.box:hover::after {
transform: scaleX(1);
@keyframes LeftToRight {
from {
transform: scaleX(0);
transform: scaleX(1);
以上全部代码如下:
<!DOCTYPE html>
<html lang="en">
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<div class="box">
<div class="text">
css实现背景色从左往右自动刷
<ul class="list">
<li>标题一</li>
<li>标题二</li>
<li>标题三</li>
<li>标题四</li>
<li>标题五</li>
</body>
<style>
body {
background-color: black;
.box {
box-sizing: border-box;
position: relative;
width: 500px;
height: 100px;
padding: 10px;
background: #fff;
border-radius: 8px;
border: 1px solid rgba(3, 210, 242, 0.16);
color: #1564da;
font-size: 22px;
.box::after {
content: '';
position: absolute;
left: 0;
top: 0;
bottom: 0;
right: 0;
transition: 0.3s;
opacity: 0.3;
border-radius: 8px;
background: rgb(180, 17, 17);
transform-origin: left;
animation: LeftToRight 3s infinite;
.box:hover::after {
transform: scaleX(1);
@keyframes LeftToRight {
from {
transform: scaleX(0);
transform: scaleX(1);
.list {
border-radius: 4px;
width: 500px;
background-color: #ffffff;
padding: 0;
position: relative;
box-sizing: border-box;
list-style: none;
width: 100%;
height: 50px;
text-align: center;
line-height: 50px;
border-radius: 4px;
color: rgb(240, 84, 49);
border: 1px solid rgb(251, 66, 38);
li::before {
content: '';
position: absolute;
top:0;
left:0;
/* 位于原本li 下面 */
z-index: -1;
height: 100%;
width: 0;
/* 动画时长 */
transition: 0.3s;
/* 变换的背景色 */
background-color: rgb(240, 69, 66);
li:hover {
z-index: 1;
color: #fff;
li:hover::before {
width: 100%;
</style>
</html>
<style type=”text/css”>
.woon{border:1px solid #fff;}
.wooff{border:1px solid #ffffff;filter:progid:DXImagetransform.Microsoft.Alpha(style=1,opacity=1500,finishOpacity=1);}
</style>
[removed]
windo
css语法
background: linear-gradient(direction,color-stop1,color-stop2,...);
direction:用角度值指定渐变的方向(或角度);
color-stop1,color-stop2,...:用于指定渐变的起止颜色
ps:至少需要两种颜色
1 background: -webkit-linear-gradient(red,ye...