How Does CSS Nesting Revolutionize CSS Design and Improve Code Maintainability?

Nesting CSS Classes: A Revolution in CSS Design

In the past, CSS nesting was not possible, but with the introduction of the CSS Nesting Module, it's now a reality. This allows you to nest rules within other rules, creating a more maintainable and manageable CSS codebase.

Syntax of CSS Nesting

The syntax of CSS nesting is straightforward:

parent-class {
  & selector {
    declarations;
  }
}

In this syntax, the & symbol represents the parent selector. It allows you to target child selectors within the parent class.

Examples of CSS Nesting

Here are a few examples of how you can use CSS nesting:

/* Apply styles to all `<td>` elements within `.colortable` */
table.colortable {
  & td {
    text-align:center;
  }
}

/* Apply styles to the first `<td>` element and its adjacent sibling within `.colortable` */
table.colortable {
  & td:first-child, & td:first-child + td {
    border:1px solid black;
  }
}

/* Apply styles to all `<th>` elements within `.colortable` */
table.colortable {
  & th {
    text-align:center;
    background:black;
    color:white;
  }
}

/* Apply styles to `.bar` elements that are children of `.foo` */
.foo {
  color: red;
  & > .bar {
    color: blue;
  }
}

/* Apply styles to `.parent` elements that contain `.foo` elements */
.foo {
  color: red;
  & .parent & {
    color: blue;
  }
}

Browser Support for CSS Nesting

CSS nesting is supported in all major browsers, including:

• Chrome
• Firefox
• Safari
• Edge
• iOS Safari

With CSS nesting, you can create more organized and maintainable CSS code that is easier to read and understand.

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