was just on stack overflow wondering why the code was being cut off in that skinny middle content section... then i remembered I'd disabled The Tampermonkey extension.

re-enabled that and suddenly code examples on Stack Overflow were so much more readable.

Here's the entire script (not counting standard #UserScript comments for matching urls and such)

GM_addStyle(`
#mainbar, .mainbar { width: 100% }
#sidebar, .sidebar { display: none}
`);

#Tampermonkey https://www.tampermonkey.net/