[role=navigation] {
  display: block;
  position: relative;
  padding: 1.5em;
}

#menu-toggle {
  height: 1.5em;
  display: block;
  position: relative;
  z-index: 1;

  -webkit-user-select: none;
  user-select: none;
}

#burger {
  user-select: none;
}

#menu button {
  display: none;
}

#menu label {
  display: flex;
  justify-content: flex-start;
  cursor: pointer;
  padding: 1em;
  text-decoration: none;
  transition: color 0.3s ease;
  width: 80%;
  border-bottom: 0.1em solid #eff2f6;
  font-size: 1.375em;
  color: #1A3967;
}

#menu #first-reset {
  border-top: 0.1em solid #eff2f6;
}

#menu label:hover {
  color: #ed7f22;
}

#menu-toggle #burger {
  display: block;
  width: 2em;
  height: 100%;
  margin-bottom: 5px;
  position: absolute;
  top: auto;
  left: auto;

  cursor: pointer;

  opacity: 0; /* hide this */
  z-index: 2; /* and place it over the hamburger */

  -webkit-touch-callout: none;
}

/*
 * Just a quick hamburger
 */
#menu-toggle span {
  display: block;
  width: 2em;
  height: 0.25em;
  margin-bottom: 0.3125em;
  position: relative;

  background: #1A3967;
  border-radius: 0.1875em;

  z-index: 1;

  transform-origin: 0.25em 0;

  transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0),
  background 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0),
  opacity 0.55s ease;
}

#menu-toggle span:first-child {
  transform-origin: 0 0;
}

#menu-toggle span:nth-last-child(2) {
  transform-origin: 0 100%;
}

/*
 * Transform all the slices of hamburger
 * into a cross-mark.
 */
#menu-toggle input:checked ~ span {
  opacity: 1;
  transform: rotate(45deg) translate(-2px, -1px);
  background: #1A3967;
}

/*
 * But let's hide the middle one.
 */
#menu-toggle input:checked ~ span:nth-last-child(3) {
  opacity: 0;
  transform: rotate(0deg) scale(0.2, 0.2);
}

/*
 * Oh-yeah and the last one should go the other direction
 */
#menu-toggle input:checked ~ span:nth-last-child(2) {
  transform: rotate(-45deg) translate(0, -1px);
}

/*
 * Make this absolute positioned
 * at the top left of the screen
 */
#menu {
  position: absolute;
  width: 100vw;
  height: 100vh;
  right: -100%;

  background: #ffffff;

  list-style-type: none;
  -webkit-font-smoothing: antialiased;
  /* to stop flickering of text in safari */

  transform-origin: 0 0;
  transform: translate(100%, 0);

  transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0);
}


#menu-toggle #burger:checked ~ ul {
  transform: none;
}