.hamburger-menu {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
  cursor: pointer;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hamburger-menu::before,
.hamburger-menu::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background-color: currentColor;
  transition: transform 0.3s ease-in-out;
}

.hamburger-menu::before {
  transform: translateY(-6px);
}

.hamburger-menu::after {
  transform: translateY(6px);
}

.hamburger-menu.active::before {
  transform: rotate(45deg);
}

.hamburger-menu.active::after {
  transform: rotate(-45deg);
}