Less is a stylesheet language that helps make creating web designs easier. It works like a regular language such as English: you give it instructions, and it turns them into something else. For example, let's say you want to style a website with different colors. You can give Less instructions like “make the background color blue, the text color green, and the buttons yellow”. Less then takes those instructions and turns them into code that your web browser can understand. So, instead of writing out a lot of code yourself, you can use Less to do it for you!