To learn how to link CSS to HTML, create a separate CSS file and connect it to your HTML document using the <link> element inside the <head> section. For example, use <link rel="stylesheet" href="style.css">, where style.css is your stylesheet. This method keeps your HTML structure separate from your visual styling and makes website maintenance easier. Make sure the CSS file is stored in the correct folder and that the href path matches its location. If you are building a professional website, understanding how CSS connects with HTML is an essential part of creating clean, responsive, and consistent web pages.