.header-pc {
  position: fixed;
  z-index: 100;
}


main {
  width: 100vw;
  overflow-x: hidden;
}

.index-banner {
  width: inherit;
  height:calc(98vh - 195px);
  position: relative;
  width: 100%;
max-height:900px;
  overflow: hidden;

}


.main-content {
	
	top: 100%;
	left: 0;
	z-index: 10;
	width: 100%;
	height: auto;
	padding-top: 225px;
	background: white;
	overflow: auto;
	outline: none;
	transition: top 0.7s cubic-bezier(0.5,0,0.2,1) 0s;
}




.zt_box{
	margin:40px auto;
	}



.zt_box .slick-slider .slick-track,
.zt_box .slick-slider .slick-list {
    -webkit-transform: translate3d(0, 0, 0);
    -moz-transform: translate3d(0, 0, 0);
    -ms-transform: translate3d(0, 0, 0);
    -o-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
}

.zt_box .slick-track {
    position: relative;
    top: 0;
    left: 0;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.zt_box .slick-track:before,
.zt_box .slick-track:after {
    display: table;
    content: '';
}

.zt_box .slick-track:after {
    clear: both;
}

.zt_box .slick-loading .slick-track {
    visibility: hidden;
}

.zt_box .slick-slide {
    width: 33.3%;
   
    float: left;
    min-height: 1px;
    padding: 0;
}

[dir='rtl'] .slick-slide {
    float: right;
}

.zt_box .slick-slide a {
    display: block;
    width: 100%;
    overflow: hidden
}

.zt_box .slick-slide img {
    display: block;
    margin: 0 auto;
    width: 96%;
}

.zt_box .slick-slide.slick-loading img {
    display: none;
}

.zt_box .slick-initialized .slick-slide {
    display: block;
}

.zt_box .slick-loading .slick-slide {
    visibility: hidden;
}

.zt_box .slick-vertical .slick-slide {
    display: block;
    height: auto;
    border: 1px solid transparent;
}

.zt_box .slick-arrow.slick-hidden {
    display: none;
}