图片封面展示动画

Html

Css

*,*:before,*:after {
	box-sizing:border-box;
	margin:0;
	padding:0;
}
body {
	background:#1f1f1f;
	font-family:'Open Sans',Helvetica,Arial,sans-serif;
}
.cont {
	position:relative;
	overflow:hidden;
	height:100vh;
	padding:80px 70px;
}
.cont__inner {
	position:relative;
	height:100%;
}
.cont__inner:hover .el__bg:after {
	opacity:1;
}
.el {
	position:absolute;
	left:0;
	top:0;
	width:19.2%;
	height:100%;
	background:#252525;
	-webkit-transition:width 0.7s,opacity 0.6s 0.7s,z-index 0s 1.3s,-webkit-transform 0.6s 0.7s;
	transition:width 0.7s,opacity 0.6s 0.7s,z-index 0s 1.3s,-webkit-transform 0.6s 0.7s;
	transition:transform 0.6s 0.7s,width 0.7s,opacity 0.6s 0.7s,z-index 0s 1.3s;
	transition:transform 0.6s 0.7s,width 0.7s,opacity 0.6s 0.7s,z-index 0s 1.3s,-webkit-transform 0.6s 0.7s;
	will-change:transform,width,opacity;
}
.el:not(.s--active) {
	cursor:pointer;
}
.el__overflow {
	overflow:hidden;
	position:relative;
	height:100%;
}
.el__inner {
	overflow:hidden;
	position:relative;
	height:100%;
	-webkit-transition:-webkit-transform 1s;
	transition:-webkit-transform 1s;
	transition:transform 1s;
	transition:transform 1s,-webkit-transform 1s;
}
.cont.s--inactive .el__inner {
	-webkit-transform:translate3d(0,100%,0);
	transform:translate3d(0,100%,0);
}
.el__bg {
	position:relative;
	width:calc(100vw - 140px);
	height:100%;
	-webkit-transition:-webkit-transform 0.6s 0.7s;
	transition:-webkit-transform 0.6s 0.7s;
	transition:transform 0.6s 0.7s;
	transition:transform 0.6s 0.7s,-webkit-transform 0.6s 0.7s;
	will-change:transform;
}
.el__bg:before {
	content:"";
	position:absolute;
	left:0;
	top:-5%;
	width:100%;
	height:110%;
	background-size:cover;
	background-position:center center;
	-webkit-transition:-webkit-transform 1s;
	transition:-webkit-transform 1s;
	transition:transform 1s;
	transition:transform 1s,-webkit-transform 1s;
	-webkit-transform:translate3d(0,0,0) scale(1);
	transform:translate3d(0,0,0) scale(1);
}
.cont.s--inactive .el__bg:before {
	-webkit-transform:translate3d(0,-100%,0) scale(1.2);
	transform:translate3d(0,-100%,0) scale(1.2);
}
.el.s--active .el__bg:before {
	-webkit-transition:-webkit-transform 0.8s;
	transition:-webkit-transform 0.8s;
	transition:transform 0.8s;
	transition:transform 0.8s,-webkit-transform 0.8s;
}
.el__bg:after {
	content:"";
	z-index:1;
	position:absolute;
	left:0;
	top:0;
	width:100%;
	height:100%;
	background:rgba(0,0,0,0.3);
	opacity:0;
	-webkit-transition:opacity 0.5s;
	transition:opacity 0.5s;
}
.cont.s--el-active .el__bg:after {
	-webkit-transition:opacity 0.5s 1.4s;
	transition:opacity 0.5s 1.4s;
	opacity:1 !important;
}
.el__preview-cont {
	z-index:2;
	display:-webkit-box;
	display:-webkit-flex;
	display:-ms-flexbox;
	display:flex;
	-webkit-box-pack:center;
	-webkit-justify-content:center;
	-ms-flex-pack:center;
	justify-content:center;
	-webkit-box-align:center;
	-webkit-align-items:center;
	-ms-flex-align:center;
	align-items:center;
	position:absolute;
	left:0;
	top:0;
	width:100%;
	height:100%;
	-webkit-transition:all 0.3s 1.2s;
	transition:all 0.3s 1.2s;
}
.cont.s--inactive .el__preview-cont {
	opacity:0;
	-webkit-transform:translateY(10px);
	transform:translateY(10px);
}
.cont.s--el-active .el__preview-cont {
	opacity:0;
	-webkit-transform:translateY(30px);
	transform:translateY(30px);
	-webkit-transition:all 0.5s;
	transition:all 0.5s;
}
.el__heading {
	color:#fff;
	text-transform:uppercase;
	font-size:18px;
}
.el__content {
	z-index:-1;
	position:absolute;
	left:0;
	top:0;
	width:100%;
	height:100%;
	padding:30px;
	opacity:0;
	pointer-events:none;
	-webkit-transition:all 0.1s;
	transition:all 0.1s;
}
.el.s--active .el__content {
	z-index:2;
	opacity:1;
	pointer-events:auto;
	-webkit-transition:all 0.5s 1.4s;
	transition:all 0.5s 1.4s;
}
.el__text {
	text-transform:uppercase;
	font-size:40px;
	color:#fff;
}
.el__close-btn {
	z-index:-1;
	position:absolute;
	right:10px;
	top:10px;
	width:60px;
	height:60px;
	opacity:0;
	pointer-events:none;
	-webkit-transition:all 0s 0.45s;
	transition:all 0s 0.45s;
	cursor:pointer;
}
.el.s--active .el__close-btn {
	z-index:5;
	opacity:1;
	pointer-events:auto;
	-webkit-transition:all 0s 1.4s;
	transition:all 0s 1.4s;
}
.el__close-btn:before,.el__close-btn:after {
	content:"";
	position:absolute;
	left:0;
	top:50%;
	width:100%;
	height:8px;
	margin-top:-4px;
	background:#fff;
	opacity:0;
	-webkit-transition:opacity 0s;
	transition:opacity 0s;
}
.el.s--active .el__close-btn:before,.el.s--active .el__close-btn:after {
	opacity:1;
}
.el__close-btn:before {
	-webkit-transform:rotate(45deg) translateX(100%);
	transform:rotate(45deg) translateX(100%);
}
.el.s--active .el__close-btn:before {
	-webkit-transition:all 0.3s 1.4s cubic-bezier(0.72,0.09,0.32,1.57);
	transition:all 0.3s 1.4s cubic-bezier(0.72,0.09,0.32,1.57);
	-webkit-transform:rotate(45deg) translateX(0);
	transform:rotate(45deg) translateX(0);
}
.el__close-btn:after {
	-webkit-transform:rotate(-45deg) translateX(100%);
	transform:rotate(-45deg) translateX(100%);
}
.el.s--active .el__close-btn:after {
	-webkit-transition:all 0.3s 1.55s cubic-bezier(0.72,0.09,0.32,1.57);
	transition:all 0.3s 1.55s cubic-bezier(0.72,0.09,0.32,1.57);
	-webkit-transform:rotate(-45deg) translateX(0);
	transform:rotate(-45deg) translateX(0);
}
.el__index {
	overflow:hidden;
	position:absolute;
	left:0;
	bottom:-80px;
	width:100%;
	height:100%;
	min-height:250px;
	text-align:center;
	font-size:20vw;
	line-height:0.85;
	font-weight:bold;
	-webkit-transition:opacity 0.3s 1.4s,-webkit-transform 0.5s;
	transition:opacity 0.3s 1.4s,-webkit-transform 0.5s;
	transition:transform 0.5s,opacity 0.3s 1.4s;
	transition:transform 0.5s,opacity 0.3s 1.4s,-webkit-transform 0.5s;
	-webkit-transform:translate3d(0,1vw,0);
	transform:translate3d(0,1vw,0);
}
.el:hover .el__index {
	-webkit-transform:translate3d(0,0,0);
	transform:translate3d(0,0,0);
}
.cont.s--el-active .el__index {
	-webkit-transition:opacity 0.3s,-webkit-transform 0.5s;
	transition:opacity 0.3s,-webkit-transform 0.5s;
	transition:transform 0.5s,opacity 0.3s;
	transition:transform 0.5s,opacity 0.3s,-webkit-transform 0.5s;
	opacity:0;
}
.el__index-back,.el__index-front {
	position:absolute;
	left:0;
	bottom:0;
	width:100%;
}
.el__index-back {
	color:#2f3840;
	opacity:0;
	-webkit-transition:opacity 0.25s 0.25s;
	transition:opacity 0.25s 0.25s;
}
.el:hover .el__index-back {
	-webkit-transition:opacity 0.25s;
	transition:opacity 0.25s;
	opacity:1;
}
.el__index-overlay {
	overflow:hidden;
	position:relative;
	-webkit-transform:translate3d(0,100%,0);
	transform:translate3d(0,100%,0);
	-webkit-transition:-webkit-transform 0.5s 0.1s;
	transition:-webkit-transform 0.5s 0.1s;
	transition:transform 0.5s 0.1s;
	transition:transform 0.5s 0.1s,-webkit-transform 0.5s 0.1s;
	color:transparent;
}
.el__index-overlay:before {
	content:attr(data-index);
	position:absolute;
	left:0;
	bottom:0;
	width:100%;
	height:100%;
	color:#fff;
	-webkit-transform:translate3d(0,-100%,0);
	transform:translate3d(0,-100%,0);
	-webkit-transition:-webkit-transform 0.5s 0.1s;
	transition:-webkit-transform 0.5s 0.1s;
	transition:transform 0.5s 0.1s;
	transition:transform 0.5s 0.1s,-webkit-transform 0.5s 0.1s;
}
.el:hover .el__index-overlay {
	-webkit-transform:translate3d(0,0,0);
	transform:translate3d(0,0,0);
}
.el:hover .el__index-overlay:before {
	-webkit-transform:translate3d(0,0,0);
	transform:translate3d(0,0,0);
}
.el:nth-child(1) {
	-webkit-transform:translate3d(0%,0,0);
	transform:translate3d(0%,0,0);
	-webkit-transform-origin:50% 50%;
	transform-origin:50% 50%;
}
.cont.s--el-active .el:nth-child(1):not(.s--active) {
	-webkit-transform:scale(0.5) translate3d(0%,0,0);
	transform:scale(0.5) translate3d(0%,0,0);
	opacity:0;
	-webkit-transition:opacity 0.95s,-webkit-transform 0.95s;
	transition:opacity 0.95s,-webkit-transform 0.95s;
	transition:transform 0.95s,opacity 0.95s;
	transition:transform 0.95s,opacity 0.95s,-webkit-transform 0.95s;
}
.el:nth-child(1) .el__inner {
	-webkit-transition-delay:0s;
	transition-delay:0s;
}
.el:nth-child(1) .el__bg {
	-webkit-transform:translate3d(0%,0,0);
	transform:translate3d(0%,0,0);
}
.el:nth-child(1) .el__bg:before {
	-webkit-transition-delay:0s;
	transition-delay:0s;
	background-image:url("../imgs/1.jpg");
}
.el:nth-child(2) {
	-webkit-transform:translate3d(105.20833%,0,0);
	transform:translate3d(105.20833%,0,0);
	-webkit-transform-origin:155.20833% 50%;
	transform-origin:155.20833% 50%;
}
.cont.s--el-active .el:nth-child(2):not(.s--active) {
	-webkit-transform:scale(0.5) translate3d(105.20833%,0,0);
	transform:scale(0.5) translate3d(105.20833%,0,0);
	opacity:0;
	-webkit-transition:opacity 0.95s,-webkit-transform 0.95s;
	transition:opacity 0.95s,-webkit-transform 0.95s;
	transition:transform 0.95s,opacity 0.95s;
	transition:transform 0.95s,opacity 0.95s,-webkit-transform 0.95s;
}
.el:nth-child(2) .el__inner {
	-webkit-transition-delay:0.1s;
	transition-delay:0.1s;
}
.el:nth-child(2) .el__bg {
	-webkit-transform:translate3d(-19.2%,0,0);
	transform:translate3d(-19.2%,0,0);
}
.el:nth-child(2) .el__bg:before {
	-webkit-transition-delay:0.1s;
	transition-delay:0.1s;
	background-image:url("../imgs/2.jpg");
}
.el:nth-child(3) {
	-webkit-transform:translate3d(210.41667%,0,0);
	transform:translate3d(210.41667%,0,0);
	-webkit-transform-origin:260.41667% 50%;
	transform-origin:260.41667% 50%;
}
.cont.s--el-active .el:nth-child(3):not(.s--active) {
	-webkit-transform:scale(0.5) translate3d(210.41667%,0,0);
	transform:scale(0.5) translate3d(210.41667%,0,0);
	opacity:0;
	-webkit-transition:opacity 0.95s,-webkit-transform 0.95s;
	transition:opacity 0.95s,-webkit-transform 0.95s;
	transition:transform 0.95s,opacity 0.95s;
	transition:transform 0.95s,opacity 0.95s,-webkit-transform 0.95s;
}
.el:nth-child(3) .el__inner {
	-webkit-transition-delay:0.2s;
	transition-delay:0.2s;
}
.el:nth-child(3) .el__bg {
	-webkit-transform:translate3d(-38.4%,0,0);
	transform:translate3d(-38.4%,0,0);
}
.el:nth-child(3) .el__bg:before {
	-webkit-transition-delay:0.2s;
	transition-delay:0.2s;
	background-image:url("../imgs/3.jpg");
}
.el:nth-child(4) {
	-webkit-transform:translate3d(315.625%,0,0);
	transform:translate3d(315.625%,0,0);
	-webkit-transform-origin:365.625% 50%;
	transform-origin:365.625% 50%;
}
.cont.s--el-active .el:nth-child(4):not(.s--active) {
	-webkit-transform:scale(0.5) translate3d(315.625%,0,0);
	transform:scale(0.5) translate3d(315.625%,0,0);
	opacity:0;
	-webkit-transition:opacity 0.95s,-webkit-transform 0.95s;
	transition:opacity 0.95s,-webkit-transform 0.95s;
	transition:transform 0.95s,opacity 0.95s;
	transition:transform 0.95s,opacity 0.95s,-webkit-transform 0.95s;
}
.el:nth-child(4) .el__inner {
	-webkit-transition-delay:0.3s;
	transition-delay:0.3s;
}
.el:nth-child(4) .el__bg {
	-webkit-transform:translate3d(-57.6%,0,0);
	transform:translate3d(-57.6%,0,0);
}
.el:nth-child(4) .el__bg:before {
	-webkit-transition-delay:0.3s;
	transition-delay:0.3s;
	background-image:url("../imgs/4.jpg");
}
.el:nth-child(5) {
	-webkit-transform:translate3d(420.83333%,0,0);
	transform:translate3d(420.83333%,0,0);
	-webkit-transform-origin:470.83333% 50%;
	transform-origin:470.83333% 50%;
}
.cont.s--el-active .el:nth-child(5):not(.s--active) {
	-webkit-transform:scale(0.5) translate3d(420.83333%,0,0);
	transform:scale(0.5) translate3d(420.83333%,0,0);
	opacity:0;
	-webkit-transition:opacity 0.95s,-webkit-transform 0.95s;
	transition:opacity 0.95s,-webkit-transform 0.95s;
	transition:transform 0.95s,opacity 0.95s;
	transition:transform 0.95s,opacity 0.95s,-webkit-transform 0.95s;
}
.el:nth-child(5) .el__inner {
	-webkit-transition-delay:0.4s;
	transition-delay:0.4s;
}
.el:nth-child(5) .el__bg {
	-webkit-transform:translate3d(-76.8%,0,0);
	transform:translate3d(-76.8%,0,0);
}
.el:nth-child(5) .el__bg:before {
	-webkit-transition-delay:0.4s;
	transition-delay:0.4s;
	background-image:url("../imgs/5.jpg");
}
.el:hover .el__bg:after {
	opacity:0;
}
.el.s--active {
	z-index:1;
	width:100%;
	-webkit-transform:translate3d(0,0,0);
	transform:translate3d(0,0,0);
	-webkit-transition:width 0.7s 0.7s,z-index 0s,-webkit-transform 0.6s;
	transition:width 0.7s 0.7s,z-index 0s,-webkit-transform 0.6s;
	transition:transform 0.6s,width 0.7s 0.7s,z-index 0s;
	transition:transform 0.6s,width 0.7s 0.7s,z-index 0s,-webkit-transform 0.6s;
}
.el.s--active .el__bg {
	-webkit-transform:translate3d(0,0,0);
	transform:translate3d(0,0,0);
	-webkit-transition:-webkit-transform 0.6s;
	transition:-webkit-transform 0.6s;
	transition:transform 0.6s;
	transition:transform 0.6s,-webkit-transform 0.6s;
}
.el.s--active .el__bg:before {
	-webkit-transition-delay:0.6s;
	transition-delay:0.6s;
	-webkit-transform:scale(1.1);
	transform:scale(1.1);
}
.icon-link {
	position:absolute;
	left:5px;
	bottom:5px;
	width:32px;
}
.icon-link img {
	width:100%;
	vertical-align:top;
}
.icon-link--twitter {
	left:auto;
	right:5px;
}

↑上面代码改变，会自动显示代码结果 jQuery调用版本：1.11.3

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图片封面展示动画



代码描述：巧妙用到 html css javript,图片封面展示动画

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图片封面展示动画

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