Slightly off-topic, but as much as I like all these low-tech websites (and I really do!) - I think I need some sort of extension that does this: body { max-width:900px; margin-left:auto; margin-right:auto; } Because trying to read full width text on modern resolutions is way too wide, and I don't even run my browser full screen - I have no idea how people that do, can read it.
javascript:!function(){var e,t;e='body {margin: auto;margin-left: 100px;max-width: 540px;font-family: "Helvetica Neue", Helvetica, sans-serif;}',t=document.createElement("style"),t.type="text/css",t.appendChild(document.createTextNode(e)),document.getElementsByTagName("head")[0].appendChild(t)}();
You could change the "540" to "900" for your needs. I prefer this to narrowing the window because I prefer the whole screen to have a uniform background color.Edit I don't think it is infaillible, it didn't work on this page, but it works well on pages with no markup. For more complicated site you may try this: https://oxal.org/projects/sakura/bookmark/