I've been googling, reading about coding and searching all over this forum trying to find a code to make my Pets section FIT in the table but I've had no luck trying to understand it. I hope it's ok to post looking for it, I'm a total noob about coding and don't mind if my profile looks fancy or not, but I would really love to find out how to make that section fit for my number of pets. (25 pets, wished to fit them into a nice 5x5 square) Is there any guide with basic codes of that sort?

Give this a try!

.data { width: 20% !important; }

+1 what said. Also, if you want to make the column itself bigger, something like: { min-width: 38em !important; }