.button {
  border: none;
  background-color: #00889e;
  padding: 1rem;
  color: white;
  border-radius: 0 0.5rem 0.5rem 0;
  position: fixed;
  z-index: var(--scroll-to-top-index);
}
@include max(mobile) {
  .button {
    bottom: -70rem;
    width: 100%;
  }
  .active {
    border-radius: 0;
    bottom: 0;
  }
}
.active {
  transition: 0s;
}

@include min(tablet) {
  .button {
    width: 15rem;
    left: -70rem;
    top: 50vh;
  }
  .active {
    left: 0;
  }
}