/* BASIC css start */
#header{position:absolute; background:none; transition:background 0.3s}
#header .top{background:none;}
#header.fixedHeader{background:#fff;}

.collection{font-size:0; line-height:0;}
.collection img{width:100%; display:block;}
.collection .tit{font-size:24px; font-weight:600; line-height:32px; color:#000; margin-top:36px;}
.collection .des{padding-left:12px; font-size:14px; font-weight:400; line-height:20px; color:#999; border-left:solid 2px #D9D9D9; margin-top:16px;}
.collection .con{margin-top:36px; font-size:16px; font-weight:500; line-height:24px; color:#333;}

.collection > img{display:block; margin-bottom:20px;}
.collection .flex{display:flex; justify-content: space-between; margin-bottom:20px; flex-wrap: wrap;}
.collection .flex > img.wd50{width:calc(50% - 2px); margin-bottom:2px;}

.collection .btn{display:block; padding:16px 0; text-align:center; color:#fff; font-size:16px; font-weight:500; line-height:19px; background:#000; margin:48px 0 106px 0;}
.collection .btn img{width:16px; height:16px; margin-left:6px; display:inline-block; transform:rotate(180deg); vertical-align:middle;}
/* BASIC css end */