armstrong-react/dist/navigation.scss

body {
  overflow-x: hidden;
}

nav.burger-menu,
main {
  overflow: visible;
  transition: transform 0.3s;
  transition-timing-function: ease-out;
}

main {
  z-index: 1;
  position: relative;
}

.menu-open {
  nav.burger-menu {
    transform: translate3d(250px, 0, 0);
  }

  &.menu-push main {
    transform: translate3d(250px, 0, 0);
  }
  &.menu-slide .burger-blocker {
      pointer-events: all;
      opacity: 1;
  }
}

.burger-blocker {
  position: fixed;
  height: 100vh;
  width: 100vw;
  background-color: rgba(0, 0, 0, 0.3);
  top: 0;
  left: 250px;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 255;
  pointer-events: none;
  transition: opacity 0.2s;
  opacity: 0;
}

nav.burger-menu {
  position: fixed;
  top: 0;
  bottom: 0;
  left: -250px;
  width: 250px;
  max-width: calc(100vw - 50px);
  z-index: 256;
  & > div{
      height: 100%;
  }



  ul.burger-menu-list {
    list-style: none;
    padding: 0;
    margin: 0;
    height: 100%;
    background-color: $gray-medium;
    z-index: 1;
    li{
      margin: 0;
    }

    li div.burger-menu-item {
      list-style: none;
      display: block;
      padding: 20px;
      transition: background 0.1s;
      text-decoration: none;
      opacity: 0.8;
      color: white;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);

      i {
        margin-right: 10px;
      }

      &.active {
        font-weight: bold;
        opacity: 1;
        background: rgba(255, 255, 255, 0.05);
      }
    }
  }
}

.burger-menu-button {
  outline: none;
  border: 0;
  height: 100%;
  width: 100%;
  text-align: center;
  background: rgba(0, 0, 0, 0.1);
  cursor: pointer;
}

.hidden {
  display: none;
}

.tab-control {
  .tab-item-header {
    transition: background-color 0.1s;
    cursor: pointer;
    display: inline-block;
    padding: $field-padding-vertical $field-padding-horizontal;
    background-color: $gray-light;

    &.selected {
      background-color: $gray-medium;
      color: $white;
    }
  }

  &.tabs-right {
    .tab-control-header {
      text-align: right;
    }
  }

  &.tabs-left {
    .tab-control-header {
      text-align: left;
    }
  }
}