/* nav toggle */
.nav-toggle {
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  cursor: pointer;
  height: 2rem;
  left: 2rem;
  position: fixed;
  top: 2rem;
  width: 3.6rem;
  z-index: 2; }
  .nav-toggle:hover {
    opacity: 0.8; }
  .nav-toggle .nav-toggle-bar,
  .nav-toggle .nav-toggle-bar::after,
  .nav-toggle .nav-toggle-bar::before {
    position: absolute;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    -webkit-transition: all 0.5s ease;
    -moz-transition: all 0.5s ease;
    -ms-transition: all 0.5s ease;
    -o-transition: all 0.5s ease;
    transition: all 0.5s ease;
    background: white;
    content: '';
    height: 0.4rem;
    width: 100%; }
  .nav-toggle .nav-toggle-bar {
    margin-top: 0; }
  .nav-toggle .nav-toggle-bar::after {
    margin-top: 0.8rem; }
  .nav-toggle .nav-toggle-bar::before {
    margin-top: -0.8rem; }
  .nav-toggle.expanded .nav-toggle-bar {
    background: transparent; }
  .nav-toggle.expanded .nav-toggle-bar::after, .nav-toggle.expanded .nav-toggle-bar::before {
    background: white;
    margin-top: 0; }
  .nav-toggle.expanded .nav-toggle-bar::after {
    -ms-transform: rotate(45deg);
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg); }
  .nav-toggle.expanded .nav-toggle-bar::before {
    -ms-transform: rotate(-45deg);
    -webkit-transform: rotate(-45deg);
    transform: rotate(-45deg); }

/* nav */
.nav {
  -webkit-transition: left 0.5s ease;
  -moz-transition: left 0.5s ease;
  -ms-transition: left 0.5s ease;
  -o-transition: left 0.5s ease;
  transition: left 0.5s ease;
  background: #28dde0;
  color: white;
  cursor: pointer;
  font-size: 2rem;
  height: 100vh;
  left: -20rem;
  padding: 6rem 2rem 2rem 2rem;
  position: fixed;
  top: 0;
  width: 20rem;
  z-index: 1; }
  .nav.expanded {
    left: 0; }
  .nav ul {
    position: absolute;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    list-style: none;
    margin: 0;
    padding: 0; }