.header {
  position: relative;
  z-index: 99;
}

.header-menu {
  position: relative;
}
.header-menu__trigger {
  cursor: pointer;
}
.header-menu__content {
  position: absolute;
  top: 1.25rem;
  right: 0;
  min-width: 200px;
  transition: all 300ms ease;
  border: 1px solid var(--light-gray);
  z-index: 1;
}
.header-menu__content.top {
  left: 0;
  right: auto;
}


.header-nav__trigger {
  width: 3rem;
  height: 3rem;
  display: flex;
  cursor: pointer;
  position: relative;
}

.header-nav__trigger-toggle {
  top: 50%;
  left: 50%;
  transform-origin: center;
  transform: translate(-50%, -50%);
}

.header-nav__trigger-toggle, .header-nav__trigger-toggle::before, .header-nav__trigger-toggle::after {
  border-radius: 1px;
  height: 2px;
  width: 1.25rem;
  display: block;
  background-color: var(--black);
  position: absolute;
  transition: all 150ms ease;
}

.header-nav__trigger-toggle::before, .header-nav__trigger-toggle::after {
  content: "";
  top: 0;
  left: 0;
}

.header-nav__trigger-toggle::before {
  animation: toggler-top 800ms ease forwards;
}

.header-nav__trigger-toggle::after {
  animation: toggler-bottom 800ms ease forwards;
}

.header-nav__trigger.active .header-nav__trigger-toggle {
  transition-delay: 200ms;
  transform: translate(-50%, -50%) rotate(135deg);
}

.header-nav__trigger.active .header-nav__trigger-toggle::before {
  animation: toggler-top-open 800ms ease forwards;
}

.header-nav__trigger.active .header-nav__trigger-toggle::after {
  animation: toggler-bottom-open 800ms ease forwards;
}

.header-nav__content {
  position: fixed;
  top: 0;
  left: 0;
  padding-top: 8rem;
  height: 100%;
  width: 100%;
  background-color: var(--white);
  transition: all 400ms ease;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  z-index: -1;
  color: var(--black);
}
.header-nav__content.top {
  padding-top: 12rem;
}

.header-nav__container {
  padding: 2rem 1.5rem 4rem;
}

.header-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.header-nav__list-item {
  color: inherit;
  display: block;
  padding: 0.25rem 0.5rem;
}

@media screen and (min-width: 1200px) {
  .header-nav__content,
  .header-nav__trigger {
    display: none;
  }
}

/** Keyframes **/
@keyframes toggler-top-open {
  0% {
    transform: translateY(6px)
  }

  30% {
    transform: translateY(0)
  }

  to {
    transform: translateY(0)
  }
}

@keyframes toggler-bottom-open {
  0% {
    transform: translateY(-6px)
  }

  30% {
    transform: translateY(0)
  }

  to {
    transform: translateY(0) rotate(90deg)
  }
}

@keyframes toggler-bottom {
  0% {
    transform: translateY(0)
  }

  30% {
    transform: translateY(0)
  }

  to {
    transform: translateY(6px)
  }
}

@keyframes toggler-top {
  0% {
    transform: translateY(0) rotate(90deg)
  }

  30% {
    transform: translateY(0)
  }

  to {
    transform: translateY(-6px)
  }
}