In this age of technology, it is a must that your website is accessible on all devices that a user can use. Especially as most users go onto their phones these days to look up websites. Functionally is a important task when designing a website today. You must make sure that it looks good and functions as it would on desktop or laptop.
You want to make all pictures in your code so that not only they look nice on a PC but look and function well in a responsive design. A user goes on first impressions and will come back if the site looks and functions well in all devices.
So if you want your site to blossom in the world wide net, mobile is a must. Here at Desired websites we design from mobile out, so not only does it look great on laptop or desktop but functions and looks amazing in all devices.