hubl/src/styles/hubl-app/header/_index.scss

header {
  height: 72px;
  position: fixed;
  z-index: 999;

  .logo {
    img {
      max-width: 200px;
    }
  }

  /* Remove the disclosure triangle */
  details {

    summary {

      /* on Firefox v.<69 */
      &::-moz-list-bullet {
        list-style-type: none;
      }
      /* on Chrome */
      &::-webkit-details-marker {
        display: none;
      }
    }
  }
  /* End */

  solid-notifications {
    color: var(--color-primary);

    @media($small) {
      padding: 0;
    }

    .solid-notifications__container {
      position: relative;

      .solid-notifications__button {
        @include icon('bell');
        font-size: 2.5rem;

        @media($large) {
          font-size: 3rem;
        }

        &::before {
          margin-left: 0;
        }

        img {
          display: none;
        }

        .solid-notifications__counter {
          left: 2rem;
          position: absolute;
          top: 1px;

          @media($large) {
            left: 2.1rem;
            top: -3px;
          }

          span {
            color: white;
          }
        }
      }

      .solid-notifications__triangle-back {
        display: none;
      }

      .solid-notifications__triangle-shadow {
        display: none;

        @media($large) {
          background: white;
          display: block;
          position: absolute;
          left: auto;
          right: -2.1em;
          top: 5em;
          transform: initial;
          width: 0;
          z-index: 4;

          &::after {
            content: "";
            position: absolute;
            width: 0;
            height: 0;
            margin-left: -5em;
            top: 0px;
            left: 50%;
            border: 1em solid black;
            border-color: #fff #fff transparent transparent;
            transform-origin: 0 0;
            transform: rotate(-45deg);
            box-shadow: 6px -6px 10px -3px rgba(92, 97, 104, 0.14);
          }
        }
      }

      .solid-notifications__list {
        border: none;
        border-radius: 0;
        box-shadow: 0 0 7px 0 rgba(92, 97, 104, 0.24);
        max-height: calc(100vh - 50px);
        position: fixed;
        left: 0;
        top: 2.5em;
        width: 100vw;

        @media($large) {
          max-height: calc(100vh - 93px);
          position: absolute;
          left: auto;
          right: -2.3em;
          top: 3.95em;
          width: 347px;
        }

        /* Custom scrollbar */
        overflow: auto;
        -webkit-overflow-scrolling: touch;
        -ms-overflow-style: none;
        scrollbar-width: thin;
        scrollbar-color: #C9C8C8 #F1F1F1;

        &::-webkit-scrollbar-track {
          background: #F1F1F1;
        }

        &::-webkit-scrollbar-thumb {
          background-color: #C9C8C8;
          border-radius: 8px;
        }

        &::-webkit-scrollbar {
          width: 8px;
        }

        /* End of custom scrollbar */

        .solid-notifications__item {
          border-bottom: none;

          &:hover {
            background-color: transparent;

            & solid-notification__title,
            & solid-notification__summary {
              color: var(--color-secondary);
            }
          }

          .solid-notification {
            padding: 1.2rem 0 1.5rem;

            &[data-read] {
              opacity: 0.5;
            }

            .solid-notification__avatar {
              align-items: center;
              background: var(--color-grey);
              display: flex;
              height: 35px;
              justify-content: center;
              margin-left: 1.6rem;
              margin-right: 1.4rem;
              overflow: hidden;
              position: relative;
              vertical-align: middle;
              width: 35px;

              img {
                background-color: var(--color-grey);
                height: 100%;
                object-fit: cover;
                object-position: center center;
                width: 100%;
              }

              object {
                height: 45%;
                width: 45%;
              }
            }

            .solid-notification__content {
              font-family: Open Sans, sans-serif;

              .solid-notification__title {
                color: var(--color-heading);
                font-size: 1.3rem;
                font-weight: 600;

                .solid-notification__title__side {
                  font-weight: normal;

                  >span:first-child {
                    margin-right: 4px;
                  }
                }

                .solid-notification__title__icon {
                  display: inline-block;
                  font-family: simple-line-icons;
                }
              }

              .solid-notification__summary {
                color: var(--color-grey);
                font-size: 1.2rem;
                line-height: 1.7rem;
                margin: 1.1rem 0 0;

                @media($small) {
                  max-width: 226px;
                }

                @media($large) {
                  max-width: 256px;
                }
              }
            }

            .solid-notification__read {
              display: none;
            }
          }
        }
      }
    }
  }

  #user-controls {
    padding: 0;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;

    summary {
      cursor: pointer;
      display: block; /* To remove the disclosure triangle on Firefox v.>=69 */

      &:focus {
        background-color: transparent;
        color: white;
        outline: none;

        @media($large) {
          background-color: var(--color-heading);
        }
      }
    }

    #user-controls__panel {
      height: 0;
      position: absolute;
      right: 0;
      z-index: 1;
      /* Quick fix for mobile version */
      width: 215px;
      top: 42px;

      @media($large) {
        width: 100%;
        top: 72px;
      }

      >nav {
        box-shadow: 0 7px 8px 0 rgba(0, 0, 0, 0.16);
        position: absolute;
        right: 0;
        top: 0;
        height: auto;
        width: 100%;

        solid-link,
        button {
          display: block;
        }

        button {
          width: 100%;
          text-align: left;
        }
      }
    }

    &[open] {

      #user-controls__profile {

        div {

          solid-display-value[name='button'] {
            @include icon('close');
          }
        }
      }
    }
  }
}