html {
  margin: 0;
}

body {
  margin: 0;
}

.content {
  margin: 0 auto;
}

.header {
  height: 40px;
  background: #FFFFFF;
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo {
  height: 46px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.menus {
  height: 46px;
  background: #020617;
  display: flex;
  align-items: center;
  margin-bottom: 20px;
  

}
.list{
  width: 1280px;
  margin: 0 auto;
  display: flex;
}

.menu-item {
  margin-left: 16px;
  height: 35px;
  line-height: 35px;
}

.menu-item>a {
  color: white;
}

a {
  text-decoration: none;
}

.active {
  border-bottom: 2px solid #0080FF;
}

.module {
  display: flex;
  justify-content: center;

}

.module-sub.left {
  height: 477px;
  width: 848px;
}

.module-sub.right {
  margin-left: 16px;
  width: 416px
}

.banner {
  width: 1280px;
}

.module-sub>div {
  width: 100%;
}

.pictures {
  display: flex;
  flex-wrap: wrap;
}

img {
  width: 100%;
}

.picture>img {
  height: 309px;
  width: 309px;
}

.desc {
  width: 309px;
  height: 40px;
  font-size: 14px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #222222;
  line-height: 20px;
  margin-top: 12px;
  margin-bottom: 24px;
}

.desc1 {
  width: 309px;
  height: 40px;
  font-size: 14px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #222222;
  line-height: 20px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.device-list {
  width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}



.footer {
  height: 185px;
  background: #000000;

  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.footer-item {
  margin-bottom: 3px;
  font-size: 14px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #FFFFFF;
  line-height: 30px;
  text-align: center;
}