website/assets/scss/header.scss

.navigation {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  height: 93px;
  color: #ffffff;
  border-bottom:  1px solid rgba($color: #e3e9ef, $alpha: 0.4);
  background-image: linear-gradient(to top, rgba(23, 188, 133, 0.18), rgba(0, 169, 113, 0.18));

  .header-container {
    position: relative;
    width: 1160px;
    margin: 0 auto;
  }

  .logo {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
  }

  .nav {
    height:93px;
    margin-left: 200px;
    margin-right: 380px;
    line-height: 93px;
    & > li:first-child {
      margin-left: 0;
    }
    & > li {
      display: inline-block;
      margin-left: 20px;
      position: relative;
      font-size: 16px;
      line-height: 20px;
      cursor: pointer;
      & > a {
        color: #ffffff;
      }
    }

    & > .active {
      a {
        // color: #55bc8a;
      }
    }
  }

  .menu-active {
    span {
      // color: #55bc8a;
    }
    .active {
      a {
        color: #55bc8a;
      }
    }
  }

  .menu-li:hover {
    padding-bottom: 40px;
  }

  .menu-span::after {
    display: inline-block;
    content: '';
    margin-left: 5px;
    border-width: 4px 2px;
    border: solid transparent;
    border-top-color: #fff;
  }

  .dropdown-menu {
    display: none;
    position: absolute;
    top: 40px;
    box-sizing: border-box;
    width: 160px;
    padding: 12px 0;
    left: 50%;
    transform: translateX(-50%);
    background: #ffffff;
    line-height: 30px;
    font-size: 0;
    border-radius: 6px;
    box-shadow: 0 4px 8px 0 rgba(36,46,66,.06),0 8px 16px 0 rgba(36,46,66,.05);

    li {
      padding: 0 20px;
      height: 32px;
      line-height: 32px;
      font-size: 12px;
      color: #36435c;

      a {
        color: #36435c;

        &:hover {
          color: #55bc8a;
        }
      }

    }

    .active {
      border-left: 2px solid #55bc8a;
      a {
        color: #55bc8a;
      }
    }
    &::after {
      position: absolute;
      top: -20px;
      left: 50%;
      transform: translateX(-50%);
      content: "";
      width: 0;
      height: 0;
      border: 10px solid transparent;
      border-bottom-color: #fff;
    }
  }

  .right-menu {
    position: absolute;
    top: 28px;
    right: 0;

    & > ul {
      & > li {
        display: inline-block;
      }
    }

    .language-menu {
      position: relative;
      cursor: pointer;
      &:hover {
        padding-bottom: 40px;
      }
      & > div  {
        img, span {
          display: inline-block;
          vertical-align: middle;
        }

        span::after {
          display: inline-block;
          content: '';
          margin-left: 5px;
          border-width: 4px 2px;
          border: solid transparent;
          border-top-color: #fff;
        }
      }
      .dropdown-menu {
        color: black;
        width: 120px;
        padding-left: 20px;
        li {
          padding: 0;
          margin: 0;
        }
      }
    }

    .btn-li {
      margin-left: 18px;
      margin-right: 4px;
      button {
        width: 112px;
        height: 36px;
        border-radius: 30px;
        border: none;
        font-size: 14px;
        color: #ffffff;
        cursor: pointer;
        box-shadow: 0 10px 50px 0 rgba(34, 43, 62, 0.1), 0 8px 16px 0 rgba(33, 43, 61, 0.2);
        background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.1) 97%), linear-gradient(to bottom, #242e42, #242e42);
        &:hover {
          box-shadow: none;
        }
      }

      &:hover {
        padding-bottom: 40px;
      }

      .dropdown-menu {
        top: 60px
      }

      ol {
        li {
          display: block;
          margin-left: 0;
        }
      }
    }

    .link-li {
      a {
        display: inline-block;
        width: 16px;
        height: 16px;
        margin-left: 12px;
        background-position: center center;
        background-repeat: no-repeat;
      }

      .link-1 {
        background-image: url('/images/header/slack.svg');

        &:hover {
          background-image: url('/images/header/slack-hover.svg');
        }
      }

      .link-2 {
        background-image: url('/images/header/twitter.svg');

        &:hover {
          background-image: url('/images/header/twitter-hover.svg');
        }
      }

      .link-3 {
        background-image: url('/images/header/github.svg');

        &:hover {
          background-image: url('/images/header/github-hover.svg');
        }
      }

    }
  }
}

.navigationScroll {
  box-shadow: 0 4px 8px 0 rgba(36, 46, 66, 0.06), 0 8px 16px 0 rgba(36, 46, 66, 0.05);
  background-image: linear-gradient(to bottom, rgba(134, 219, 162, 0.9), rgba(0, 170, 114, 0.9));
}