.menu-bar {
  position: fixed;
  height: 100%;
  width: 90%;
  max-width: 320px;
  margin: 0;
  padding: 1em;
  background: #f0f0f0;
  top: 0;
  left: -90%;
  transition: left 0.3s ease-out;
  z-index: 1;
}

.active-menu .menu-bar {
  left: 0;
}

.active-menu .overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
}
