stvngrd

I already posted what I use: https://infohound.net/tidy/
Also, I saw that CSS found 8 errors and 54 warnings via w3.org: https://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fnakontra.com%2FSoccerPress&profile=css3&usermedium=all&warning=1&vextwarning=&lang=bg#css

Wp 4.1 installed from the scratch: 34 warnings, 13 errors nakontra.com/SoccerPress/

Sure, I use a domain for testing purpose only. https://nakontra.com/
Here’s another WP with different plugins and themes but again all deactivated, 75 warnings and 13 errors. With the other two default themes is quite the same, only 1-2 warnings more.
I am going to install fresh new WP and see how is there going because I’ve never checked so far.

I needed the option to share the result via Facebook and I solved it using JS and Facebook App (I created one just for this functionality, it is easy and fast).
You can see the outcome when you finish the quiz on my page https://en.pomisli.com/ and if you like it, mail me: mail[at]pomisli[dot]com for detailed instructions on how to implement it on your page! ??