There are two basic approaches to responsive web design: mobile-first and desktop-first. Desktop-first web design means making a full-screen, detailed website first. Then breaking it up and hiding or SEO Expate BD Ltd wrapping elements to make it fit smaller screens. This has been the most common way to do things for a long time, but it can make it hard to use and use some of the most important parts of the mobile version. Moreover, plenty of responsive website designs have already been created by the SEO Expate Bangladesh Ltd. developers. With the rise of mobile devices, mobile-first web design has received attention in the last decade. Mobile-first web design, also known as content-first design. It includes carefully designing the content of your mobile website. Here, to be as intuitive and user-friendly as possible before adding extra visual and narrative elements on top for the desktop version. How do Responsive Website Function? A typical website is made up of a collection of files (each web page—home page, about page, etc.—is its file). Each file includes HTML code as well as content (text and images). Cascading Style Sheets (CSS) files use to style web pages (CSS). To simplify, consider a standard (non-responsive) website to have a set of files. A few CSS files govern the site’s appearance. A responsive website uses a different set of CSS files based on the device used to view the site.The site appears and responds differently depending on the device. For example, while a desktop computer displays a horizontally oriented navigation menu, a mobile device displays a vertically aligned navigation menu with a bigger font that is easier to see on a smaller screen.