Mobile first responsive design using loads of flexbox

The first time I uploaded this challenge's solution I actually uploaded the 3 column preview card challenge by mistake lmao.....

At the final stretch of this project I got stuck figuring out how to stop the comment card from overflowing to the left, Finally I realized that I need to set the minimum width for it to not overflow.

Off topic question but, how much HTML and CSS(and maybe SCSS) do you need to know before learning javascript? Right now the tradeschool I am attending is teaching javascript and I am still very sloppy when it comes to HTML and CSS, so idk if I am ready for javascript just yet