Paul L. Newton commented on Fast Easy Work :)

The first problem should be solvable in your theme settings.

use this bookmarklet code on widescreen to preview if there is not a theme setting what changing this would look like

javascript:$('.wrapper').css('max-width','none');

So you can see what the simplest change would do, Check your theme settings for a 'width' setting that's something like 1030 and either uncheck it  or clear the input, or change it to 100% if the input is 1030px. Another option is 'none' but that should be what's used when you clear the input.