.around-center {
  position: absolute;
  left: 50%;
  -webkit-transform: translateX(-50%);
      -ms-transform: translateX(-50%);
          transform: translateX(-50%);
}
.un-center {
  position: absolute;
  top: 50%;
  -webkit-transform: translateY(-50%);
      -ms-transform: translateY(-50%);
          transform: translateY(-50%);
  text-align: center;
}
.center-all {
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}
.center-all-flex {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
     -moz-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -webkit-flex-direction: column;
     -moz-box-orient: vertical;
     -moz-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
}
/*去除padding*/
.noScroll {
  -webkit-overflow-scrolling: touch;
  -webkit-overflow-scrolling: auto;
}
/*
.asset::-webkit-scrollbar { display:none }*/
body,
html {
  background-color: #ffffff;
}
.main .banner {
  width: 100%;
  height: 450px;
  background-image: url(../images/banner.ecb52d9.png);
  background-size: 100% 100%;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #e6e6e6;
  cursor: pointer;
}
.main .w .brand-list {
  width: 89%;
  height: 860px;
  background-image: url(../images/bg.ab20a74.png);
  background-size: 100% 100%;
  background-position: center;
  background-repeat: no-repeat;
  margin: 0 auto;
  cursor: pointer;
}
.main .w .brand-list ul {
  zoom: 1;
}
.main .w .brand-list ul:after {
  content: "";
  display: block;
  clear: both;
}
.main .w .brand-list ul li {
  height: 360px;
}
.main .w .brand-list ul li:first-child {
  width: 320px;
  margin-top: 161px;
  margin-left: 20px;
  background-color: #d1d1d1;
}
.main .w .brand-list ul li:first-child + li {
  width: 400px;
  height: 250px;
  background-color: red;
  margin-top: 161px;
}
.main .w .brand-list ul li:first-child + li + li {
  width: 400px;
  height: 250px;
  background-color: #222222;
}
.main .w .brand-list ul li:first-child + li + li + li {
  width: 319px;
  height: 300px;
  background-color: #222222;
  float: right;
  margin-top: -150px;
}
.main .w .brand-list ul li:first-child + li + li + li + li {
  width: 319px;
  height: 250px;
  background-color: yellow;
  float: right;
  margin-left: -5px;
}