html {
  /* Smooth scrolling for free (in supported browsers) */
  scroll-behavior: smooth;
  /* Javascript solution: http://iamdustan.com/smoothscroll/ */
}
.nav-to-top {
  /* 'display:none' is needed to hide scale(0) animation on page-load */
  display: none; 
  position: fixed;
  z-index: +33;
  right: 0;
  bottom: 0;
  min-width: 4rem;
  min-height: 4rem;
  margin: 1rem;
  transition: transform 0.3s;
}
.nav-to-top-active,
.nav-to-top:active,
.nav-to-top:focus {
  display: block;
  transform: scale(1);
}
.nav-to-top-inactive {
  display: block;
  transform: scale(0);
}

.nav-to-top[data-is-configured="false"] {
  color: black;
  background-color: white;
  width: auto;
  height: auto;
  padding: 1rem;
}