.back-to-top {
  position: fixed;
  right: 30px;
  bottom: 30px;
  z-index: 299;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: #fff;
  background-color: rgba(0, 0, 0, 0.3);
  border-radius: 2px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--ncmg-transition), visibility 0s linear 0.2s, background-color var(--ncmg-transition);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--ncmg-transition), background-color var(--ncmg-transition);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  color: #fff;
  background-color: var(--ncmg-color-accent);
}

.back-to-top__icon {
  width: 24px;
  height: 24px;
}

@media (max-width: 767.98px) {
  .back-to-top {
    right: 15px;
    bottom: 15px;
  }
}