Responsive web design creates a better user experience and ensures your website looks good on all devices (computers, phones, tablets, etc.). But, since mobile phones have become the primary device used for surfing the web, more companies are recognizing the importance of a website that effectively delivers content on a smaller screen. The responsive first approach simply means designing for the smallest screened devices first and then working up to the larger ones.
In 2015, mobile experience was added to Google’s core algorithm for ranking search results. Last year, Google announced their mobile-first index, in which Google will primarily index mobile content and rank search listings based on the mobile version of content. So, if your website doesn’t appear user friendly on a smaller screen, you’re already behind in the competition.