.back-to-top{
  width: 32px;
  height: 32px;
  border-radius: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 32px;
  min-height: 32px;
  padding: 2rem;
}

.back-to-top::before{
  box-shadow: none;
}

.back-to-top::after{
  box-shadow: none;
}

.back-to-top span svg{
  width: 24px;
  transform: rotate(180deg);
}