.video-list {
	width: 100%;
	margin: 2% 0;
}

.video-list li {
	float: left;
	width: 31%;
	background: #f5f5f5;
	margin: 1% 1% 1% 1%;
}

.video-list li .thumb {
	display: block;
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
}

.video-list li .thumb img {
	position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 1s;
}

.video-list li .item {
	padding: 5%;
}

.video-list li .item h3 {
	font-size: 15px;
	color: #55504f;
	text-overflow: ellipsis;
	white-space: nowrap;
	overflow: hidden;
}

/*鼠标hover效果*/
.video-list li:hover .thumb img {
	-webkit-transform: scale(1.1);
	transform: scale(1.1);
}

.video-list li .thumb:after {
	display: none;
	content: "";
	position: absolute;
	left: 0px;
	top: 0px;
	width: 100%;
	height: 100%;
	z-index: 1;
	transition: all 0.3s;
	background: rgba(0, 0, 0, 0.2) url(../images/video.svg) no-repeat center -500px/40px;
}

.video-list li:hover .thumb:after {
	display: block;
	background: rgba(0, 0, 0, 0.3) url(../images/video.svg) no-repeat center center/40px;
}

.video-list li:hover .item {
	background: #e6002d;
}

.video-list li:hover .item h3 {
	color: #fff;
}


@media screen and (max-width:1024px){
.video-list li{
    width:97%;
    margin:4% 1.5%;
}

.video-list li .thumb:after {
    display:block;
    background:rgba(0, 0, 0, 0.3) url(../images/video.svg) no-repeat center center/30px;
}
}