openpower.foundation/themes/openpowerfoundation/assets/css/header.scss

body {
  #mobile-nav {
    display: none;
  } 
  &.mobile-nav-active {

      #mobile-nav {
      display: block;
       position: fixed;
       top: 80px;
       background: white;
       z-index: 100;
       width:100%;
       height: 100%;
    }  
  }

.header {
  padding: 10px 0;
  @media screen and (max-width: $lg) {
    padding-top:17px;
  }
  border-bottom: 1px solid #1b1c1f;
  position: fixed;
  width: 100vw;
  height: 80px;
  background: white;
  z-index: 100; 
  &__logo {
    text-decoration: none; 
      &-col {
      flex-grow: 0; 
    }
  }
  &__menu {
    margin-bottom: 0;
    align-items: center;
    line-height: 1.2;
    &-item {
      text-align: center;
      &.join {
        display: none;
      }
      &.menu-has-children {
        position: relative;
        ul {
          display: none;
          position: absolute;
          background-color: white;
          padding-left: 0;
          li {
            margin-right: 0;
          }
        }
        &:hover {
          ul {
            display: block;
          }
        }
      }
      &:not(:last-child) {
        margin-right: 1em;
      }
      &:hover a::after,
      &._active a::after {
        width: 100%;
      }
      a {
        display: block;
        padding: .3em .2em;
        color: #02123e;
        &::after {
          display: block;
          content: '';
          width: 0;
          border-bottom: 1px solid currentColor;
          transition: width .2s ease-out; 
        }
        &:hover {
          color: #2566f4; 
        }
      }
    }
  }
  &__contact-col {
    flex-grow: 0; 
  }
  &__contact-btn,
  &__login-btn {
    min-width: 80px;
    white-space: nowrap;  
  }
  &__login-btn {
    margin-left: 1.5em;
  }
}


// Mobile navigation 

#mobile-nav-toggle {
  border: none;
  height: 45px;
  margin-right: 5px;
  background-color:transparent;
  @media screen and (min-width: $lg) {
    display: none;
  }
}

#mobile-nav {
  border-bottom: 1px solid black;
  @media screen and (max-width: $lg) {
    display: none;
    padding-top:35px;
  }
     ul {
      list-style: none;
      padding-left: 0;

      &:first-child {
        height: 100%;
        top: -5px;
        overflow-y: auto;
      }

      &.menu-item-active {
        margin-top:0;
      }
  
     li {
      &.menu-has-children {
         padding-left:4%;
      }

      &.join {
       display: none;
      }

       a {
         display: inline-block;
         &.expandable-active {
            font-weight: 500;
            font-size: 100%;
            
         }
       }
       i {
         padding-left: 12px;
       }
        ul {
          width:100%;
          background-color:white;
          position: relative;
          z-index: 200;
          display: block;
          margin-left:auto;
          margin-right: auto;
          border: none;
          li {
            padding:0 15px;
          }
        }        
        &:hover { 
          a {
            text-decoration: none;
         &::after {
           display: none;
        }
      }
     } 
    }
  }
 }
    .navbar {
      @media screen and (max-width: $lg) {
        display: none;
      }
     }

// Desktop navigation responsive 

.header__menu-item {
  @media screen and (min-width: $lg) {
    // font-size: 83%;
  }  

  &.menu-has-children {
    ul {
      width:300px;
      margin-top:1.6vw;
      list-style: none;
      border-top: none;
      border-bottom: 1px solid #e8e8e8;
      border-right: 1px solid #e8e8e8;
      border-left: 1px solid #e8e8e8;;
      @media screen and (min-width: $lg) {
        margin-top: 0.5em;
      }  
      li {
        padding:10px 0;
        border: none;
        @media screen and (min-width: $lg) {
          font-size: 100%;
        }

        a {
          border: none;
          text-align:left;
          &:before, &:after {
            display: none;
          }
            padding-left:15px;
          }
        }
      }
    }
  }

  .header__logo {
    img {
      @media screen and (max-width: $lg) {
        max-width:200px;
        height: auto;
      }

      @media screen and (min-width:$lg) and (max-width: $xl) {
        max-width:120px;
        height: auto;
      }

      @media screen and (min-width:$xl) and (max-width: $xxl) {
        max-width:120px;
        height: auto;
      }
    }
  }
}

// Mobile navigation: mobile and desktop visibility

.mobile-view-social-join {
  @media screen and (min-width: $lg) {
    display: none;
  }
}

.social__list {
        &.desktop-view {
          @media screen and (max-width: $lg) {
            display: none;
          }  
          .social__item {
             @media screen and (min-width:$lg) and (max-width: $xxl) {
             margin-right: 0; 
          }
        }
    }

  &.mobile-view {
    display: flex;
    align-items: center;
    justify-content: center;
  }
 }

.join-us-button,
.login-button {
  &.desktop-view {
    @media screen and (max-width: $lg) {
      display: none;
    }
    a {
      @media screen and (min-width:$lg) and (max-width: $xxl) {
        max-width:80px;
        height: auto;
        padding:0.375rem 0;
      }
    }
  }
  &.mobile-view {
    margin:auto;
    width: 97px; 
    min-width: 97px; 
  } 
}