I looked at the code and one important thing to note is that you should not use any element + onclick + window.open for links. Links should be <a> tags. The one

I looked at the code and one important thing to note is that you should not use any element + onclick + window.open for links. Links should be <a> tags. The ones you currently have are impossible to navigate with a keyboard (that's called accessibility) and for someone that isn't running JavaScript.