SCSS

Nesting

First example

Here we apply a rule to class foo and also to a p tag inside an element with class foo.

Make sure to use space after & if using tags - otherwise you’ll end up with foop.

.foo {
  color: blue;
  
  & p {
    color: red
  }
}

Compiled CSS:

.foo {
  color: blue;
}

.foo p {
  color: red;
}

Second example

If you are combining classes like .foo.bar then you don’t need a space after &.

.site-nav {
  // Center
  margin: auto;
  width: 50%;
  text-align: center;

  .page-link {
    color: white;
    background-color: $grey-color-dark;
    padding: 10px 10px;
    margin: 0px 5px;

    &:hover {
      background-color: $grey-color;
    }

    &.current {
      background-color: $brand-red;
    }
  }
}

Compiled:

.site-nav .page-link {
  color: white;
  background-color: #424242;
  padding: 10px 10px;
  margin: 0px 5px;
}

.site-nav .page-link:hover {
  background-color: #828282;
}

.site-nav .page-link.current {
  background-color: #e8262d;
}