Looks fantastic. I also really appreciate that it searches for all games by default. It was annoying to have to change the settings in order to find games that weren't 2-player Pro games using the old system.
Yeah, it was annoying me too. I kept not finding my test games.
It's too wide for my 1280x720 screen. (see screenshot)
Will fix. I could choose the <img> tag width based on the browser window width, or allow card width as an option. I assume just using the browser zoom doesn't look good on your display?
The drop-down menu stays highlighted brown after I select something.
Will fix.
I'm not sure what the blue tabs mean. Does blue mean on or off?
It means "on," but maybe a depressed button would be more obvious? I may not get to this, as CSS is obviously not my thing and I'm not really writing for one-time visitors.
List of whiny suggestions:
Allow saving my username in localstorage so when I reload the page it shows my games without having to type anything in.
Will fix. I'll probably also allow setting the parameters via POST, so you can bookmark the search you want like in the old version.
Right now it saves your last search parameters to localStorage, but it doesn't repeat the search for you, and you'll "lose" those settings if you search for something else. Your way is better.