.side-nav {
  top: 0;
  left: 0;
  width: 0;
  z-index: 1;
  height: 100%;
  position: fixed;
  transition: 0.5s;
  padding-top: 60px;
  overflow-x: hidden;
  background-color: #660000;
}

.side-nav a {
  color: white;
  display: block;
  font-size: 2rem;
  transition: 0.3s;
  text-decoration: none;
  padding: 8px 8px 8px 32px;
}

.side-nav a:hover {
  color: #f1f1f1;
}

.side-nav .closebtn {
  top: 0;
  right: 25px;
  border: none;
  font-size: 36px;
  margin-left: 50px;
  position: absolute;
}

#main {
  transition: margin-left 0.5s;
}