* {
  margin: 0;
  padding: 0;
}
@media screen and (min-width: 775px) {
  .bot .bgc {
    width: 100%;
  }
  .body {
    min-width: 1900px;
  }
  .nav {
    width: 1200px;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0 auto;
  }
  .nav .title {
    width: auto;
    height: 80%;
  }
  .list {
    width: 300px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 22px;
    height: 70px;
    line-height: 70px;
  }
  .list li {
    color: #8a8b8b;
    list-style: none;
    height: 100%;
    cursor: pointer;
  }
  .list .active {
    color: #2b4d80 !important;
    font-weight: bold !important;
    line-height: 78px;
    border-bottom: 8px solid #2b4d80;
  }
  .title {
    width: 350px;
  }
  .android,
  .iphone {
    width: 352px;
  }
  .android {
    left: 24.6%;
    top: 60%;
    position: absolute;
  }
  .iphone {
    left: 24.6%;
    top: 48.5%;
    position: absolute;
  }
}
@media screen and (max-width: 775px) {
  .bot .bgc {
    width: 100%;
  }
  .body {
    width: 100%;
  }
  .nav {
    width: 95%;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0 auto;
  }
  .nav .title {
    width: auto;
    height: 50%;
  }
  .list {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 16px;
    height: 70px;
    line-height: 70px;
    margin-right: 1rem;
  }
  .list li {
    color: #8a8b8b;
    list-style: none;
    height: 100%;
    cursor: pointer;
    margin-left: 2rem;
  }
  .list .active {
    color: #2b4d80 !important;
    font-weight: bold !important;
    line-height: 78px;
    border-bottom: 8px solid #2b4d80;
  }
  .title {
    width: 350px;
  }
  .android,
  .iphone {
    width: 41%;
  }
  .android {
    left: 6%;
    top: 10px;
    position: absolute;
  }
  .iphone {
    right: 6%;
    top: 10px;
    position: absolute;
  }
  .bg {
    background-color: #e6effc;
    position: relative;
  }
}