.side-menu-overlay {
  position: fixed;
  left: 0;
  top: 0;
  min-width: 100%;
  height: 100%;
  background: rgba(17,16,16,0.4);
  z-index: 100;
  display: none;
}

#side-menu {
  display: none;
  position: fixed;
  width: 300px;
  top: 0;
  right: -300px;
  height: 100%;
  overflow-y: auto;
  z-index: 1035;
  background: #002b36;
  padding: 20px 30px;
  color: #333;
  transition: 0.4s;
}

#side-menu .close {
  font-size: 26px;
  font-weight: normal;
}