Facebook-Prophet/docs/_sass/_react_header_nav.scss

.navigationFull {
  display: none;
}

.navigationSlider {
  position: absolute;
  right: 0px;

  .navSlideout {
    cursor: pointer;
    padding-top: 4px;
    position: absolute;
    right: 10px;
    top: 0;
    transition: top 0.3s;
    z-index: 101;
  }

  .slidingNav {
    background: $secondary-bg;
    box-sizing: border-box;
    height: 0px;
    overflow-x: hidden;
    padding: 0;
    position: absolute;
    right: 0px;
    top: 0;
    transition: height 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55), width 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    width: 0;

    ul {
      flex-flow: column nowrap;
      list-style: none;
      padding: 10px;

      li {
        margin: 0;
        padding: 2px 0;

        a {
          color: $primary-bg;
          display: inline;
          margin: 3px 5px;
          padding: 2px 0px;
          transition: background-color 0.3s;

          &:focus,
          &:hover {
            border-bottom: 2px solid $primary-bg;
          }
        }
      }
    }
  }

  .navSlideoutActive {
    .slidingNav {
      height: auto;
      padding-top: $header-height + $header-pbot;
      width: 300px;
    }

    .navSlideout {
      top: -2px;
      .menuExpand {
        span:nth-child(1) {
          background-color: $text;
          top: 16px;
          transform: rotate(45deg);
        }
        span:nth-child(2) {
          opacity: 0;
        }
        span:nth-child(3) {
          background-color: $text;
          transform: rotate(-45deg);
        }
      }
    }
  }
}

.menuExpand {
  display: flex;
  flex-flow: column nowrap;
  height: 20px;
  justify-content: space-between;

  span {
    background: $primary-overlay;
    border-radius: 3px;
    display: block;
    flex: 0 0 4px;
    height: 4px;
    position: relative;
    top: 0;
    transition: background-color 0.3s, top 0.3s, opacity 0.3s, transform 0.3s;
    width: 20px;
  }
}

.navPusher {
  border-top: $header-height + $header-ptop + $header-pbot solid $primary-bg;
	position: relative;
	left: 0;
	z-index: 99;
	height: 100%;

  &::after {
    position: absolute;
    top: 0;
    right: 0;
    width: 0;
    height: 0;
    background: rgba(0,0,0,0.4);
    content: '';
    opacity: 0;
    -webkit-transition: opacity 0.5s, width 0.1s 0.5s, height 0.1s 0.5s;
    transition: opacity 0.5s, width 0.1s 0.5s, height 0.1s 0.5s;
  }

  .sliderActive &::after {
    width: 100%;
    height: 100%;
    opacity: 1;
    -webkit-transition: opacity 0.5s;
    transition: opacity 0.5s;
    z-index: 100;
  }
}


@media only screen and (min-width: 1024px) {
  .navigationFull {
    display: block;
  }

  .navigationSlider {
    display: none;
  }
}