.wrapper{
  max-width: $wrapper;
  margin: 0 auto;
  @media (max-width: $wrapper + 80px) {
    padding-left: 4rem;
    padding-right: 4rem;
    max-width: 100%;
  }
}

.wrapper--big{
  max-width: $wrapper--big;
  margin: 0 auto;
}