Responsive web design is a web design technique that takes into account the fact that recipients use the site using a variety of electronic devices. Thanks to RWD, the website dynamically adapts to the browser resolution in which it is viewed and the specific requirements of the device used by the recipient. In the era of smartphones, this solution is very convenient for the user, because it allows you to comfortably browse websites, for example on a smartphone. Adjustments under RWD can be varied: from changing the number of products in a row, replacing test links with buttons, to hiding some graphic elements that would display unsightly on an unadapted device. The technology is not the cheapest, but it allows you to easily handle traffic from various devices on the website.