HTML, CSS, mobile first design

This one was deceptively simple looking, the sizing gave me fits; got myself all tangled up with grid, flex, min/max-width's, got out of trouble thanks to Ahmad Shadeed's post Min and Max Width/Height in CSS.

Building the slider indicator was fun although I wasted a ton of time trying to do it with the HTML <progress> element (that is a nightmare to style), gave it up and just used div and span elements.

Learned a ton about what I don't know, as usual. Feedback welcome 😄