*

In CSS, the asterisk (*) is a universal selector. It matches all elements in the HTML document. This means you can apply styles to every single element on your page using this selector.

Example

* {
  margin: 0;
  padding: 0;
}

This rule will set the margin and padding to 0 for all elements on the page.

While the universal selector can be useful for resetting default styles or applying global styles, it’s important to use it judiciously. Overusing it can lead to unintended consequences and make your CSS more difficult to maintain.

It’s generally recommended to use more specific selectors whenever possible to target the elements you want to style precisely. This helps to keep your CSS clean, efficient, and easier to understand.