What is the function of a CSS selector?

A CSS selector plays a crucial role in applying styles to specific HTML elements. It serves as a pattern that determines which elements on a web page are targeted for styling. This means that by using various selectors, such as class selectors, ID selectors, or type selectors, web developers can control the visual presentation of the corresponding HTML elements, thus enhancing the user experience and ensuring a cohesive design throughout a website.

For instance, if you want to apply a style to all paragraphs in a document, you would use the paragraph selector, allowing you to change attributes like font size, color, and margins for those particular elements. This ability to target specific elements is what makes CSS powerful and flexible, enabling developers to create visually appealing and well-structured web pages effectively.