Source: medium.com On the Mobile World Congress in 2010, Eric Schmidt, the CEO of Google put forward that designers should follow the “mobile first” rule in product design. What does “mobile first design” mean? Why is it important? How to make it? I’ll answer these 3 questions in the following part. What is Mobile First Design? To understand the concept of mobile-first design better, you should know the two phrases below first. 1. Responsive Web Design (RWD) Responsive web design is a web design method that enables web to fit the screens of different devices automatically, displaying the content in a way that people feel comfortable. This greatly reduces users’ operations…