SASS provides a powerful feature called nesting that simplifies the structuring of styles by allowing us to nest selectors within one another. This makes our code more organized and easier to read.

Consider the following example:

.parent {
  background-color: #f1f1f1;

  .child {
    font-size: 16px;
    color: #333;
  }
}

In the above code, we have a .parent selector and a nested .child selector. The properties defined under the .child selector will only apply to elements with a parent of class .parent.

Nesting also helps to minimize repetition by applying styles to nested elements selectively. For example:

.parent {
  background-color: #f1f1f1;

  &.highlighted {
    color: red;
  }
}

In the above code, the .highlighted class will only apply the specified styles when it is directly applied to an element with a parent of class .parent.

While nesting can be highly useful, it's essential to avoid excessive nesting as it can lead to overly specific selectors and unnecessary CSS specificity. It's recommended to keep nesting to a reasonable level for maintainability and performance.

By utilizing nesting in SASS, we can improve the readability and organization of our stylesheets, making it easier for us to work on and maintain our code. So go ahead and start nesting those selectors like a pro!