.footer {
  background: darken(color(white-smoke), 5%);
  margin-left: $sidebar-width-lg;
  padding: 1rem;
  transition: all .8s ease;
  width: calc(100% - #{$sidebar-width-lg});
  @media (max-width: 991px) {
    margin-left: 0;
    width: 100%;
  }
}