body .content {
  height: 3000px;
  background-color: #FFFFFA;
}
.banner {
  height: 326px;
  background-image: url(../image/product-banner.png);
  background-position: center;
  background-size: cover;
}
.part1 {
  width: 100%;
}
.part1 .container {
  height: 1350px;
}
.part1 .container .title {
  margin-top: 20px;
  width: 100%;
  text-align: center;
  font-size: 24px;
  font-weight: 500;
  color: #393728;
}
.part1 .container .text {
  text-align: center;
  height: 75px;
  margin-top: 25px;
  font-size: 15px;
  font-weight: 500;
  color: #B5B5B5;
}
.part1 .container .vsimg {
  width: 815px;
  height: 244px;
  margin: 0 auto;
}
.differ {
  position: relative;
}
.differ .list {
  margin-top: 100px ;
  overflow: hidden;
  text-align: center;
  font-size: 24px;
  font-weight: 500;
  color: #393728;
}
.differ .main {
  padding: 20px 35px;
  width: 864px;
  background: #FAFAFA;
  box-shadow: 0px 5px 5px 0px rgba(220, 220, 220, 0.5);
  margin: 0 auto;
  font-size: 18px;
  font-weight: 400;
  color: #444C59;
}
.differ .main p:first-child {
  margin-right: 4%;
}
.differ .tips {
  position: absolute;
  bottom: 37%;
  left: -4%;
  font-size: 24px;
  font-weight: 500;
  color: #444C59;
}
.file {
  position: relative;
  margin-top: 30px;
}
.bottom-img {
  position: absolute;
  bottom: -36%;
  right: 5%;
}
.part2 {
  width: 100%;
  height: 1040px ;
  background: url(../image/pro-bg.png) no-repeat;
  padding-top: 30px;
}
.part2 .title {
  text-align: center;
  font-size: 24px;
  font-weight: 500;
  color: #FFFFFF;
}
.part2 .text {
  margin-top: 15px;
  text-align: left;
  text-indent: 2em;
  font-size: 18px;
  font-weight: 500;
  color: #FFFFFF;
}
.useText {
  padding: 20px;
  height: 250px;
  border-radius: 26px;
  background-color: #fff;
}
.useText p:first-child {
  font-size: 18px;
  font-weight: 500;
  color: #393728;
}
.useText p:last-child {
  text-align: justify;
  text-indent: 2em;
  margin-top: 10px;
  font-size: 15px;
  font-weight: 500;
  color: #B5B5B5;
  height: 150px;
  line-height: 22px;
  padding-right: 15px;
  overflow-y: scroll;
}
.useText p:last-child::-webkit-scrollbar {
  width: 4px;
  /*height: 4px;*/
}
.useText p:last-child::-webkit-scrollbar-thumb {
  border-radius: 2px;
  height: 44px;
  background: #5F5F5F;
  -webkit-box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.2);
  background: rgba(0, 0, 0, 0.2);
}
.useText p:last-child::-webkit-scrollbar-track {
  -webkit-box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.2);
  border-radius: 0;
}
.user-list {
  margin-top: 40px;
}
.user-list .user-img {
  height: 244px;
}
.part3 {
  padding-top: 70px;
  width: 100%;
  height: 603px;
}
.part3 .title {
  text-align: center;
  font-size: 24px;
  font-weight: 500;
  color: #444C59;
}
.part3 ul {
  width: 80%;
  margin: 70px auto;
  overflow: hidden;
  height: 300px ;
}
.part3 ul li {
  float: left;
  margin-left: 5% ;
}