Responsive websites are no longer optional. People use mobiles, tablets, laptops, and large screens every day. If a website does not adjust smoothly to different devices, users leave quickly. That is why responsive web development plays a key role in modern digital projects. However, many businesses still make mistakes during development. These errors affect speed, design, usability, and search visibility. This article explains the most common mistakes and how to avoid them to build a website that works well on all screens. Most Common Mistakes to Avoid in a Responsive Website 1. Ignoring Mobile Users from the Start One of the biggest mistakes is designing only for desktop screens. Many teams still treat mobile design as an extra step instead of a priority. Today, most users visit websites from smartphones. Professional website development should always start with a mobile-first approach. This means designing for small screens first and then expanding for larger devices. It help...