Wat happens when I float 2 elements to the left with and give the 2nd element a margin-right: 10 ?

Answer 1

Whenever you are not sure, just use code playground to write and test some sample code.
Like what I did it for you here just to clear your doubt.
https://code.sololearn.com/W0j7bMXS0SF3/?ref=app

Answer 2

Calvin, I saw on your css code that you wrote two.classes .div and .div2...what for? you are not using .div2 in the html.