Maybe you have asked yourself (or even searched for) the reason for the mobile-first paradigm trend. It is simple and makes complete sense for speeding up your development.
The main argument for the mobile-first paradigm is that it is easier to make it than to shrink it. In other words, if you make a desktop version of the web page (known as responsive design or mobile last) first and then adjust the website for mobile, it has a 99 percent probability of breaking the layout at some point and you will have to fix a lot of things.
On the other hand, if you create the mobile version first, naturally the website will use (or show) less content than the desktop version. So, it will be easier to just add the content, place the things in the right places, and create the fully responsiveness stack.
The following figure tries to illustrate this concept. Going mobile last, you will get a degraded, sharped, and crappy layout and you will get a progressively enhanced, future-friendly...
