fix(demo): correct demo-app responsive layout issues

[Splaktar]

These screenshots are on a 425x646 display, but they get worse if you try from a smaller resolution phone.

I noticed this some days ago when the initial announcement was made and the demo shared. Unfortunately I was viewing it on my phone and didn't have time to write up an issue at that point.

Browsers and Operating System
Chrome for Android (7.1.1), Chrome for OS X (El Capitan)

Issues

• Overlapping text
• Colored flex areas running out of cards

Responsive demo app: https://tburleson-layouts-demos.firebaseapp.com/#/responsive

Static mode: https://tburleson-layouts-demos.firebaseapp.com/#/docs

I would love to help out with a fix, but my time is very limited atm and I need to focus on paying work to make ends meet.

[ThomasBurleson]

@Splaktar - Thx for creating this issue; it has been a known issue but not high priority before. Now with Beta.1 approaching, I think it best if our demo app is itself responsive.

[kuncevic]

I come across this one as well. I did resize the screen to see how it is looks like straight after I've got demo-app running first time. To fix that is it just a metter of playing with mediaqueries ?