.sec1{
	padding: 4.6875% 0;
}
.sec1 .tab-controls{
	margin-bottom: 3.75%;
	font-size: 0;
	text-align: center;
}
.sec1 .tab-controls a{
	font-size: 18px;
	color: #999;
	display: inline-block;
	border-right: 1px solid #e5e5e5;
	padding: 0 4.3%;
}
.sec1 .tab-controls a:first-child{
	padding-left: 0;
}
.sec1 .tab-controls a:last-child{
	border-right: 0 none;
	padding-right: 0;
}
.sec1 .tab-controls a:hover,.sec1 .tab-controls a.active{
	color: #ffd200;
}
.sec1 .tab-controls a span{
	vertical-align: middle;
}
.sec1 .tab-controls a img{
	vertical-align: middle;
	width: 1em;
	margin-right: 0.8em;
	background-repeat: no-repeat;
	background-position: center top;
	background-size: auto 200%;
}
.sec1 .tab-controls a.all img{
	background-image: url(../images/case_sec1_icon1.png);
}
.sec1 .tab-controls a.car img{
	background-image: url(../images/case_sec1_icon2.png);
}
.sec1 .tab-controls a.port img{
	background-image: url(../images/case_sec1_icon3.png);
}
.sec1 .tab-controls a.tyre img{
	background-image: url(../images/case_sec1_icon4.png);
}
.sec1 .tab-controls a.plastic img{
	background-image: url(../images/case_sec1_icon5.png);
}
.sec1 .tab-controls a.chemical img{
	background-image: url(../images/case_sec1_icon6.png);
}
.sec1 .tab-controls a:hover img,.sec1 .tab-controls a.active img{
	background-position: center bottom;
}
.sec1 .tab-content li{
	float: left;
	overflow: hidden;
}
.sec1 .tab-content li.grid-sizer,.sec1 .tab-content li.grid-item{
	width: 33.33333%;
}
.sec1 .tab-content li.grid-item{
	padding: 1.25%;
}
.sec1 .tab-content li .box{
	overflow: hidden;
	position: relative;
}
.sec1 .tab-content li .bg{
	-webkit-transition: transform 1s cubic-bezier(.165,.84,.44,1);
	transition: transform 1s cubic-bezier(.165,.84,.44,1);
}
.sec1 .tab-content li:hover .bg{
	-webkit-transform: scale(1.1,1.1);
	transform: scale(1.1,1.1);
}
.sec1 .tab-content li .cover{
	position: absolute;
	left: 0%;
	top: 0%;
	width: 100%;
	height: 100%;
	background-repeat: repeat-x;
	background-image: url(../images/case_sec1_boxbg.png);
	background-position: left top;
	background-size: auto 100%;
	padding: 0 8.2%;
	-webkit-display: flex;
	-webkit-align-items: flex-start;
	-webkit-justify-content: flex-end;
	-webkit-flex-direction: column;
	display: flex;
	align-items: flex-start;
	justify-content: flex-end;
	flex-direction: column;
}
.sec1 .tab-content li h5{
	font-size: 12px;
	color: #ffd200;
	font-weight: normal;
	height: 1em;
}
.sec1 .tab-content li p{
	font-size: 16px;
	color: #fff;
	line-height: 1.5;
	height: 3em;
	margin-top: 0.5em;
}
.sec1 .tab-content li .btn{
	font-size: 12px;
	color: #000;
	display: block;
	background-color: #ffd200;
	width: 7.92em;
	height: 2.33em;
	line-height: 2.33em;
	text-align: center;
	-webkit-transition: all 0.5s;
	transition: all 0.5s;
	margin-bottom: -9.15%;
	margin-top: 7.85%;
	opacity: 0;
}
.sec1 .tab-content li:hover .btn{
	margin-bottom: 9.15%;
	margin-top: 2.2876%;
	opacity: 1;
}
.sec1 .tab-content li .btn span,.sec1 .tab-content li .btn img{
	vertical-align: middle;
}
.sec1 .tab-content li .btn img{
	width: auto;
	height: 1em;
	margin-left: 0.75em;
}
@media only screen and (max-width:1024px) {

	.sec1{
		padding: 2.5rem 0;
		min-height: -webkit-calc(100vh - 12rem - 2.1875rem);
		min-height: calc(100vh - 12rem - 2.1875rem);
	}
	.sec1 .tab-controls{
		margin-bottom: 1.5rem;
	}
	.sec1 .tab-controls a{
		font-size: 0.75rem;
		padding: 0 0.54rem;
	}
	.sec1 .tab-controls a img{
		margin-right: 0.5em;
	}
	.sec1 .tab-content li.grid-sizer,.sec1 .tab-content li.grid-item{
		width: 50%;
	}
	.sec1 .tab-content li h5{
		font-size: 0.5625rem;
	}
	.sec1 .tab-content li p{
		font-size: 0.6875rem;
	}
	.sec1 .tab-content li .btn{
		font-size: 0.5625rem;
		margin-bottom: -17.15%;
	}

	/*取消hover*/
	.sec1 .tab-content li:hover .bg{
		-webkit-transform: scale(1,1);
		transform: scale(1,1);
	}
	.sec1 .tab-content li:hover .btn{
		margin-bottom: -17.15%;
		margin-top: 7.85%;
		opacity: 0;
	}
}