Thank you so much!! Yeah fair enough, we would've added an input remap but we didn't have time, and E was just the first idea, we didn't have much time to playtest with other control schemes.
As for the custom CSS, we emailed itch a while back about giving us access to custom css, so when we click edit theme, we have a custom css box that we can fill in. Hope this helps.
Thank you again for your kind words