Please don't do a serious website without a container div limiting the width of the reading area. Most people with laptops keep their browser windows maximized, and resizing the window just to read one article is a huge pain in the ass. I usually just decide not to bother. Otherwise that website's great.
Are you talking about the web browser or the web page here? Or maybe the OS/DE that makes it awkward to split the screen/size the window to reading width?
Or the laptop, with it's silly form factor?
But sure, everyone that publishes some text better make sure they account for every context that it might get viewed in.
In the spirit of offering solutions, here's some code you can use to add a 'Narrow' button to your browser:
I thought it was bizarre that you thought having every author of a webpage put some noise in their code was the right place to fix your technology stack.
Is there some third way? Occasionally I really want it that wide, and if there's a div there's no way (short of firebug or grease monkey) to get it. At the same time, as someone who quite frequently has windows maximized, I feel some of your pain - though "ctrl-f S <read> ctrl-f Q" isn't exactly a "huge pain in the ass".