:root {
    --primary: hsla(0, 0%, 100%, 1);
    --secondary: hsla(0, 0%, 100%, 0.5);
    --shadow: hsla(0, 0%, 7%, 0.5);
    --layer0: hsla(0, 0%, 7%, 1.0);
    --layer1: hsla(0, 0%, 14%, 1.0);
    --layer2: hsla(0, 0%, 21%, 1.0);
    --layer3: hsla(0, 0%, 28%, 1.0);
    --layer4: hsla(0, 0%, 35%, 1.0);
}