.back-to-top {
  position: fixed;
  right: 2em;
  bottom: 2em;
  display: flex;
  padding: var(--button-link-padding);
  transition: var(--transition-time);
  text-decoration: none;
  opacity: 1;
  color: var(--button-link-color);
  border: 3px solid var(--color-white);
  background: var(--button-link-bg-color);
  font-weight: bold;
  gap: var(--spacing-small);
}

.back-to-top[hidden] {
  opacity: 0;
}

.back-to-top:hover,
.back-to-top:focus {
  text-decoration: underline;
}

.back-to-top__icon svg path {
  fill: currentColor;
}

.back-to-top-target {
  overflow: hidden;
  max-width: 1px;
  max-height: 1px;
}

@media screen and (min-width: 48rem) {
  .back-to-top {
    right: 5em;
    bottom: 5em;
  }
}