#hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  background: none;
  border: none;
  padding: 5px;
}

#hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--gold);
  margin: 3px 0;
  transition: 0.3s;
  position: relative;
}

/* MOBILE RULES */
@media screen and (max-width: 850px) {
  /** hamburger animation */
  #hamburger {
    display: flex;
  }

  #hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translateY(10px) translateX(-3px);
    width: 24px;
    height: 4px;
  }
  #hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  #hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translateY(-10px) translateX(-3px);
    width: 24px;
    height: 4px;
  }
}