## What is the `&` operator in SASS?
* Equivalent to **nesting**
* When you need more specific selector: for when you want to select an element that has 2
classes, but also be more specific at the same time:
```css
// plain css:
.some-class.another-class {}
// in SASS
.some-class {
&.another.class {}
}
```
* Theyre both ways to select an element with one class **and** select a more specific element with
another class!
* You can also use `&` when nesting parent and child elements:
```css
// in SASS
.parent {
.child {}
}
// can also be written as:
.parent {
& .child {}
// notice the space after the ampersand!!!
}
```