Update style.scss - Extend page width to 1280px

[grenwi]

Changes for page width to allow for wider main section. Yet, untested. Please test in page render workflow and merge, of working.

[FlxVctr]

Tested. Fixed width does not work on mobile/tablets (makes text unreadable).

Furthermore, in general UX and layout terms, narrower columns make text more readable. General rule of thumb is 12-20 words/100 chars per line. Why the change?

Edit: recommendations seem to be even shorter by now with 75 chars per line (https://baymard.com/blog/line-length-readability)

[FlxVctr]

If we want to increase the width anyway, I just tested succesfully increasing the width of the wrapper to 1000 and the section element to 700 in the browser inspector (or other values, but needs some tweaking and testing so that everything works out in the end). This preserves the responsiveness of the design on mobile.