.item-list.wait::before {
  content: '';
  display: block;
  background: var(--body-bg);
  opacity: 0.7;
  backdrop-filter: blur(3px);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.item-list.wait::after {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  content: '';
  height: 10rem;
  width: 10rem;
  border-top: 10px solid var(--primary);
  border-left: 10px solid var(--primary);
  border-right: 10px solid var(--primary);
  border-bottom: 10px solid transparent;
  border-radius: 100%;
  animation-duration: 2s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  animation-play-state: running;
  animation-name: spin;
}

@keyframes spin {
  0% { transform: translate(-50%, -50%) }
  100% { transform: translate(-50%, -50%) rotate(360deg) }
}

@media (max-width: 767px) {

  .category-nav {
    position: absolute;
    top: 2.5rem;
    left: 0;
    width: 100%;
    padding: 1rem;
    z-index: 10;
    background: var(--body-bg);
    display: none;
  }

  .category-list button.active + .category-nav {
    display: block;
  }
}