<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS3全屏背景图片缩小渐变代码</title>
<link rel="stylesheet prefetch" href="http://fonts.useso.com/css?family=Raleway:300">
<style type="text/css">
*{margin:0;padding:0;}
.slideshow {
position: absolute;
width: 100vw;
height: 100vh;
overflow: hidden;
}
.slideshow-image {
position: absolute;
width: 100%;
height: 100%;
background: no-repeat 50% 50%;
background-size: cover;
-webkit-animation-name: kenburns;
animation-name: kenburns;
-webkit-animation-timing-function: linear;
animation-timing-function: linear;
-webkit-animation-iteration-count: infinite;
animation-iteration-count: infinite;
-webkit-animation-duration: 16s;
animation-duration: 16s;
opacity: 1;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
.slideshow-image:nth-child(1) {
-webkit-animation-name: kenburns-1;
animation-name: kenburns-1;
z-index: 3;
}
.slideshow-image:nth-child(2) {
-webkit-animation-name: kenburns-2;
animation-name: kenburns-2;
z-index: 2;
}
.slideshow-image:nth-child(3) {
-webkit-animation-name: kenburns-3;
animation-name: kenburns-3;
z-index: 1;
}
.slideshow-image:nth-child(4) {
-webkit-animation-name: kenburns-4;
animation-name: kenburns-4;
z-index: 0;
}
@-webkit-keyframes kenburns-1 {
0% {
opacity: 1;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
1.5625% {
opacity: 1;
}
23.4375% {
opacity: 1;
}
26.5625% {
opacity: 0;
-webkit-transform: scale(1);
transform: scale(1);
}
100% {
opacity: 0;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
98.4375% {
opacity: 0;
-webkit-transform: scale(1.21176);
transform: scale(1.21176);
}
100% {
opacity: 1;
}
}
@keyframes kenburns-1 {
0% {
opacity: 1;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
1.5625% {
opacity: 1;
}
23.4375% {
opacity: 1;
}
26.5625% {
opacity: 0;
-webkit-transform: scale(1);
transform: scale(1);
}
100% {
opacity: 0;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
98.4375% {
opacity: 0;
-webkit-transform: scale(1.21176);
transform: scale(1.21176);
}
100% {
opacity: 1;
}
}
@-webkit-keyframes kenburns-2 {
23.4375% {
opacity: 1;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
26.5625% {
opacity: 1;
}
48.4375% {
opacity: 1;
}
51.5625% {
opacity: 0;
-webkit-transform: scale(1);
transform: scale(1);
}
100% {
opacity: 0;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
}
@keyframes kenburns-2 {
23.4375% {
opacity: 1;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
26.5625% {
opacity: 1;
}
48.4375% {
opacity: 1;
}
51.5625% {
opacity: 0;
-webkit-transform: scale(1);
transform: scale(1);
}
100% {
opacity: 0;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
}
@-webkit-keyframes kenburns-3 {
48.4375% {
opacity: 1;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
51.5625% {
opacity: 1;
}
73.4375% {
opacity: 1;
}
76.5625% {
opacity: 0;
-webkit-transform: scale(1);
transform: scale(1);
}
100% {
opacity: 0;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
}
@keyframes kenburns-3 {
48.4375% {
opacity: 1;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
51.5625% {
opacity: 1;
}
73.4375% {
opacity: 1;
}
76.5625% {
opacity: 0;
-webkit-transform: scale(1);
transform: scale(1);
}
100% {
opacity: 0;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
}
@-webkit-keyframes kenburns-4 {
73.4375% {
opacity: 1;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
76.5625% {
opacity: 1;
}
98.4375% {
opacity: 1;
}
100% {
opacity: 0;
-webkit-transform: scale(1);
transform: scale(1);
}
}
@keyframes kenburns-4 {
73.4375% {
opacity: 1;
-webkit-transform: scale(1.2);
transform: scale(1.2);
}
76.5625% {
opacity: 1;
}
98.4375% {
opacity: 1;
}
100% {
opacity: 0;
-webkit-transform: scale(1);
transform: scale(1);
}
}
h1 {
position: absolute;
top: 50%;
left: 50%;
-webkit-transform: translate3d(-50%, -50%, 0);
transform: translate3d(-50%, -50%, 0);
z-index: 99;
text-align: center;
font-family: Raleway, sans-serif;
font-weight: 300;
text-transform: uppercase;
background-color: rgba(255, 255, 255, 0.75);
box-shadow: 0 1em 2em -1em rgba(0, 0, 0, 0.5);
padding: 1em 2em;
line-height: 1.5;
}
h1 small {
display: block;
text-transform: lowercase;
font-size: .7em;
}
h1 small:first-child {
border-bottom: 1px solid rgba(0, 0, 0, 0.25);
padding-bottom: .5em;
}
h1 small:last-child {
border-top: 1px solid rgba(0, 0, 0, 0.25);
padding-top: .5em;
}
</style>
</head>
<body>
<!-- 文字区不需要请连css部分代码一并删除 -->
<h1><small>全屏</small>自动切换背景<small>without js</small></h1>
<!-- 你可以添加个多“.slideshow-image”项目, 记得修改CSS -->
<div class="slideshow">
<div class="slideshow-image" style="background-image: url('img/1.jpg')"></div>
<div class="slideshow-image" style="background-image: url('img/2.jpg')"></div>
<div class="slideshow-image" style="background-image: url('img/3.jpg')"></div>
<div class="slideshow-image" style="background-image: url('img/4.jpg')"></div>
</div>
</body>
</html>
CSS3实现的全屏背景图片缩小渐变切换效果源码.zip
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2022-11-02
23:36:10
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