css i want to learn <3

I can help you with the last three if you would like! just message me <3

oh man, I guess not everything got into my last comment, just send me a message and I can explain there :)

I don't quite get what you want with "how to animate things on my page (textboxes, friends etc.)"
But I do understand what you want with the other things:

round corners would be something like this:
border-radius: 25px; # you could also do percentages like 50% would be a complete circle

box around stuff:
border: 2px #FFF;
I'd just learn that better here: https://www.w3schools.com/css/css_border.asp

cute mouses:
just like Chyeanne.Lee already said: https://www.cursors-4u.com/
and

Look at my CSS for the cursor thing, for the cursors for you link

you can add a cute mouse w/ cursors4u i think