.ty-back-top {
  position: fixed;
  right: var(--ty-back-top-offset-inline-end);
  bottom: var(--ty-back-top-offset-bottom);
  background-color: var(--ty-back-top-bg);
  width: var(--ty-back-top-size);
  height: var(--ty-back-top-size);
  border-radius: var(--ty-back-top-radius);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  border: none;
  padding: 0;
  transition: opacity 200ms linear 0s, visibility;
}
.ty-back-top_custom {
  background: none;
  width: auto;
  height: auto;
  border-radius: 0;
}