Responsive Web Design (Responsive Web Design) referred to as RWD, this is a term invented by Ethan Marcotte in 2011 Responsive Web Design (RWD). After 2012, it is recognized as the trend of web design and development technology in the future, and Google's official explanation is that no matter what device the user uses to browse the web (including desktop computers, tablets or mobile phones), the web page will always use the same URL and code, but the display of the page will be adjusted according to the screen size. Allowing different devices to browse the same website normally and provide the best visual experience is a corresponding method that has been devised due to the large increase in users of mobile platforms.   "Google therefore recommends that you use RWD over other design styles."  

Let me explain here that the general mobile version website design is separated from the website on the computer and re-created separately. If the old website is only made for the mobile version without a complete re-production, it will cause the administrator to update the content of the webpage. Sometimes it is necessary to update twice, especially when the website does not have a background management system and is entrusted to different design companies to make the computer version and mobile version of the website, the data repair and update is even more troublesome, and it is often not synchronized, which is really troublesome. When the update is due, it will often cause unnecessary customer complaints. If the website has multiple language versions at the same time, and there is no background, just thinking about changing the content of the website will cause a headache..