Nested Properties CSS has quite a few properties that are in “namespaces;” for instance, font-family, font-size, and

Placeholder Selectors: %foo Sass supports a special type of selector called a “placeholder selector”. These look like class and

Referencing Parent Selectors: & Sometimes it’s useful to use a nested rule’s parent selector in other ways than the default

Nested Rules Sass allows CSS rules to be nested within one another. The inner rule then only applies within the outer rule’s selector. For example: