sass/navigation.scss

.navOuterContainer {
  background: $lightergrey;
  box-sizing: border-box;
  order: 1;

  .navInnerContainer {
    height: 100%;
  }

  h3 {
    font-size: 19px;
  }

  h5 {
    font-size: 16px;
  }

  .navList {
    position: relative;

    .navGroup.navGroupActive {
      .subList {
        display: block;
      }
      h4 {
        background-color: #DADADA;
      }
    }

    li {
      a {
        color: $lightgrey;
        display: block;
        font-weight: bold;

        &:hover {
          background-color: #DADADA;
          color: #303030;
        }
      }

      h4 {
        font-family: $base-font;
        font-size: 16px;

        a {
          color: $orange;
          padding-bottom: 10px;
          padding-top: 10px;
        }
      }
    }
  }

  .subList {
    margin-bottom: 20px;
    display: none;

    .subListItem {
      h5 {
        a {
          color: $grey;
          font-weight: 400;
          padding-left: 30px;
          position: relative;

          &::before {
            border-color: transparent transparent transparent transparent;
            border-style: solid;
            border-width: 5px 0 5px 8.7px;
            content: "";
            height: 0;
            left: 12px;
            position: absolute;
            top: 8px;
            transition: border-color 0.5s;
            width: 0;
          }
        }
      }

      &:hover {
        h5 {
          a {
            &::before {
              border-color: transparent transparent transparent $grey;
            }
          }
        }
      }

      &.itemActive {
        h5 {
          a {
            font-weight: 700;

            &::before {
              border-color: transparent transparent transparent $orange;
            }
          }
        }
      }
    }
  }

  .apiNavList {
    .navGroup {
      .subList {
        display: none;
      }

      &.navGroupActive {
        .subList {
          display: block;
        }
      }
    }

    .subList {
      .subListItem {
        h5 {
          line-height: 0.7em;

          a {
            @include apinavlink;

            &::before {
              top: 7.5px;
            }
          }
        }

        .secondLevelList {
          display: none;

          .secondLevelListItem {
            h6 {
              line-height: 0.7em;

              a {
                @include apinavlink;
                font-weight: 400;
                padding-left: 45px;
              }
            }

            &.secondLevelItemActive {
              h6 {
                a {
                  color: $midgrey;
                  font-weight: 700;
                }
              }
            }
          }
        }

        &.itemActive {
          .secondLevelList {
            display: block;
          }
        }
      }
    }
  }
}

.breadcrumbNav {
  line-height: normal;
  padding-top: 10px;
  word-wrap: break-word;
}

.breadcrumbNav, .breadcrumbNav a {
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
}

.breadcrumbSeparator {
  margin: 0 10px;
  padding-left: 6px;
  position: relative;
}

.breadcrumbSeparator::before {
  border-color: transparent transparent transparent $lightgrey;
  border-style: solid;
  border-width: 3px 0px 3px 5.5px;
  content: "";
  height: 0;
  left: 0px;
  position: absolute;
  top: 5px;
  transition: border-color 0.5s;
  width: 0;
}

@media only screen and (max-width: 480px) {
  .navOuterContainer {
    .navInnerContainer {
      .navList {
        display: block;

        li {
          width: 100%;
        }
      }

      .navToggleOn {
        .navList {
          display: block;
        }
      }
    }
  }

  .breadcrumbNav {
    line-height: 1.6em;
  }
}

@media only screen and (min-width: 480px) and (max-width: 1020px) {
  .navOuterContainer {
    .navInnerContainer {
      .navList {
        display: flex;

        & > li {
          width: 50%;
        }
      }

      .navToggleOn {
        .navList {
          display: flex;
        }
      }
    }
  }
}

@media only screen and (max-width: 1020px) {
  .navOuterContainer {
    background: none;
    box-sizing: border-box;
    height: 60px;
    overflow-x: hidden;
    position: fixed;
    right: 0;
    top: 0;
    transition: height 0.3s;
    width: 60px;
    z-index: 999;

     &.navToggleOn {
      height: 100%;
      left: 0px;
      padding-top: 60px;
      width: 100%;

      .navToggleButton {
        color: white;
      }
    }

    &.navToggleOff {
      .navList {
        display: none;
      }

      .navToggleButton {
        color: $grey;
      }
    }

    .navToggleButton {
      cursor: pointer;
      font-size: 24px;
      line-height: 60px;
      position: fixed;
      top: 0;
      right: 15px;
      z-index: 9999;
      transition: color 0.3s;
    }

    .navList {
      align-items: stretch;
      background: #f8f8f8;
      box-sizing: border-box;
      display: flex;
      flex-flow: row wrap;
      height: 100%;
      overflow-y: scroll;
      -webkit-overflow-scrolling: touch;
      padding: 10px;
      width: 100%;

      & > li {
        box-sizing: border-box;
        flex: 1;
        flex-basis: 50%;
        flex-shrink: 0;
        flex-flow: 1;
        padding: 10px;
        width: 50%;
      }
    }

    .subList {
      .subListItem h5 a::before {
        left: -12px;
      }
    }
  }
}

@media only screen and (min-width: 1020px) {
  .navOuterContainer {
    height: 100vh;
    order: 1;
    padding: 60px 0 0;
    position: fixed;
    left: 0px;
    top: 0px;
    width: 300px;
    z-index: 99;

    .navToggleButton {
      display: none;
    }

    & + .mainContainer {
      margin-left: 300px;
    }

    h3 {
      font-size: 19px;
    }

    .navList {
      box-sizing: border-box;
      height: 100%;
      overflow-x: hidden;
      overflow-y: scroll;
      padding: 20px 0;

      li {
        h4 {
          a {
            padding-left: 30px;
          }
        }
      }

      .subList {
        .subListItem {
          h5 {
            a {
              padding-left: 30px;
            }
          }
        }
      }
    }

    .navInnerContainer {
      & > .navList {
        box-sizing: border-box;
        height: 100%;
        overflow-x: hidden;
        overflow-y: scroll;
        padding: 20px 0;
      }
    }
  }
}

@media only screen and (min-width: 1400px) {
  .navOuterContainer {
    .subList {
      .subListItem {
        h5 {
          a {
            &::before {
              top: 12px;
            }
          }
        }
      }
    }

    .apiNavList {
      .subList {
        .subListItem {
          h5 {
            a::before {
              top: 10px;
            }
          }
        }
      }
    }
  }
}