Skilled-elearning-landing-page

Things that I've learned:

• If I set a background image on a button, I can't set the background color on the pseudo-element :hover.
• I've used the auto-fit grid function to set the rows and columns correctly for responsive design. I only used media queries for adjusting margins and aligning the picture.
• I need to learn more about naming my classes. (should read about BEM)
• that I need to keep the readability of my HTML in mind -if i'm stuck, i explained my code to myself and found the error (a misplaced div..)

My questions:

• My picture on the right-side on the top doesn't seem the right size and i can't figured out what is going on..
• Is my footer well written on css? I found it a little hard to st this one
• Is there anything else that you think, this is a better way to do this or that?

In general, am i on the good way on my frondent journey based on this project?

Thanks for your feedback.