First I had a challenge with visualizing the perfect margin, padding and font-size. This is the only thing that I'm not sure of otherwise the work is all well done. Incase of any mistakes notice, please leave a note. Thank You!
Hey bro, to fix the landmark issue you should use a main tag instead of a div for the container and also use the footer tag for the attribution class. and always practice using h1 on the first element you can adjust the font size with CSS. for the footer just use position: fixed and give it 0 margins it will place the footer on the bottom of the page.
hope it was helpful, if you need help just ask !!
