Mobile first attempt at Pod Access - HTML & CSS no JavaScript

First attempt at doing a "premium" newbie challenge. I found handling the positioning of elements between the 3 forms surprisingly difficult. I ended up using fairly fixed positioning for the pod logo, the dots used in tablet and desktop versions, and for the width of the "main content box".

Would love suggestions on improving it.

Many things are tweaked using properties when swapping into media queries, although not as many as I could. Impatience got the better of me in the end.

The email format checking was handled in HTML/CSS, with pseudo classes used to show / hide the error.