Making a website that works across various platforms and meets user's wants and expectations is becoming more crucial as more people use their smartphones and tablets for things that were previously only available on desktop computers. In simple terms, having a responsive design means that a website's pages reformat themselves depending on the device they are being displayed on, ensuring that regardless of whether the content is viewed on a phone, tablet, or desktop computer, the website will remain user-friendly and respond to the changing tech environment.