Sass Nested Rules and Properties

Sass nested CSS selectors are similar to HTML nesting rules.

Below we nest the styles of a navigation bar:

Sass code:

nav {
  ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }
  li {
    display: inline-block;
  }
  a {
    display: block;
    padding: 6px 12px;
    text-decoration: none;
  }
}

In the example, the ul, li, and a selectors are all nested within the nav selector.

Convert the above code to CSS code, as shown below:

CSS code:

nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
nav li {
  display: inline-block;
}
nav a {
  display: block;
  padding: 6px 12px;
  text-decoration: none;
}

Sass Nested Properties

Many CSS properties have the same prefix, for example: font-family, font-size, and font-weight, text-align, text-transform, and text-overflow.

In Sass, we can use nested properties to write them:

Sass code:

font: {
  family: Helvetica, sans-serif;
  size: 18px;
  weight: bold;
}

text: {
  align: center;
  transform: lowercase;
  overflow: hidden;
}

Convert the above code to CSS code, as shown below:

CSS code:

font-family: Helvetica, sans-serif;
font-size: 18px;
font-weight: bold;

text-align: center;
text-transform: lowercase;
text-overflow: hidden;
Other Extensions