message: Change scroll-to-top component's style and remove animation
diff: .q-scroll-to-top {
  @include flex-center;
  - height: 3rem;
  - width: 3rem;
  + height: 46px;
  + width: 46px;
  border-radius: 50%;
  background: rgba(49, 49, 49, 0.7);
  font-size: 1.5rem;
  bottom: 20px;
  right: 20px;
  text-align: center;
  - transition: transform 0.1s;
  &.hide {
  - transform: scale(0);
  + display: none;
  }
  .q-icon {
  vertical-align: bottom;
  + font-size: 22px;
  + width: 26px;
  }
  }
  