Grouping and Nesting of CSS Selectors

Lecture 43:- Grouping and Nesting of CSS Selectors

Grouping and Nesting of CSS selectors allows you to apply the same styles to multiple elements, or to target elements nested within other elements.

Grouping is a way to apply the same styles to multiple selectors. This is done by separating multiple selectors with a comma:

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h1, h2, h3 {  color: blue; }

In this example, the color property is being applied to all h1, h2, and h3 elements.

Nesting is a way to target elements within other elements. This is done by using a space to separate a parent selector from a child selector:

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#header h1 {  color: blue; }

In this example, the color property is being applied to h1 elements that are contained within an element with an id of "header".

Grouping and Nesting can be combined to target multiple, nested elements:

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h1, h2, h3 {  color: blue;  font-size: 20px; } #header h1, #header h2, #header h3 {  color: red; }

In this example, all h1, h2, and h3 elements have a blue color and a font-size of 20px. However, h1, h2, and h3 elements within an element with an id of "header" have a red color.

By using grouping and nesting, you can write more efficient and organized CSS code, and more accurately target the elements you want to style.