4dkankan_official/src/page/layout/header/istyle.scss

.header-layout {
  $ts: all .7s cubic-bezier(.77, 0, .175, 1);
  $split: #7f7f7f;
  background-color: #101010;
  display: flex;
  color: #fff;
  justify-content: space-between;

  .child-layout {
    position: absolute;
    top: 100%;
    max-height: 0;
    left: 0;
    right: 0;
    transition: $ts;
    overflow: hidden;

    .silp {
      position: absolute;
      width: 1px;
      height: 100%;
      background-color: $split;
      z-index: 2;
    }
  }

  .logo-layout {
    flex: 0 1 340px;
    text-align: center;

    .logo {
      position: relative;
      width: 150px;
      height: 100%;
      display: inline-block;

      i {
        position: absolute;
        left: 50%;
        top: 60%;
        transform: translateX(-50%) translateY(-50%);
      }

      .icon-logo_b {
        font-size: 110px;
        color: #fff;
      }

      .icon-logo_a {
        font-size: 40px;
        margin-left: -48px;
        margin-top: -6px;
        color: #1fe4dc;
      }
    }
  }

  .menu {
    display: flex;
    justify-content: space-evenly;
    width: 940px;

    .lang {
      box-sizing: border-box;
      text-align: center;
      padding-right: 10px;

      a {
        display: inline-block;
        font-size: 16px;
        font-weight: bold;
        margin-left: 5px;
      }
    }

    .list {
      border-left: 1px solid $split;
      padding: 0 20px;
      display: flex;
      min-width: 480px;
      max-width: 750px;
      justify-content: space-between;
      flex: 1;

      a {
        display: inline-block;
        padding: 25px 20px 25px 0;
        font-size: 16px;
        text-decoration: none;
        font-weight: bold;
        position: relative;
        flex: auto;

        &::after {
          display: none;
          content: '';
          border: 6px solid transparent;
          position: absolute;
          right: 0;
          top: 50%;
          transform: translateY(-50%);
        }
      }
    }
  }

  .ctrl {
    flex: 0 0 auto;

    a {
      display: inline-block;
      text-decoration: none;
      padding: 0 14px;
      height: 100%;

      i,
      span {
        display: inline-block;
        vertical-align: middle;
      }

      i {
        font-size: 24px;
      }

      span {
        font-size: 16px;
        margin-left: 4px;
        font-weight: bold;
      }

      &.user {
        background-color: #fff;
        color: #101010
      }
    }

    .search {
      position: relative;

      .hide,
      .open {
        transition: $ts
      }

      .open {
        opacity: 1;
        transform: scale(1);
      }

      .hide {
        opacity: 0;
        transform: scale(0);
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translateX(-50%) translateY(-50%);
        font-size: 16px;
      }

      &.active {
        .open {
          opacity: 0;
          transform: scale(0);
        }

        .hide {
          opacity: 1;
          transform: scale(1) translateX(-50%) translateY(-50%);
        }
      }
    }
  }

}