Is your feature request related to a problem? Please describe.

I am always frustrated when I have to make minor changes in my blog when I'm on my mobile, I've to pull up my laptop every time I want to make those changes. Using the CMS in a mobile device is a terrible experience as the UI is not responsive.

Describe the solution you'd like

Add media queries and make the Netlify CMS responsive.

Describe alternatives you've considered

Additional context