$black: black; $white: white; $cyan: #13fefe; :root { --foreground: #{$white}; --background: #{$black}; --color: #{$cyan}; } .btn { background-color: $white; } .btn-secondary { background-color: $white; color: $black; border: none; &:hover { color: $black; background-color: $cyan; } &:active { background-color: $cyan; } &:focus { box-shadow: 0 0 0 0.2rem $cyan; } } a.black { color: $white; }