How do I know if a site template is coded or ready?

I want to design an educational site. I am still the first way and I have almost no information about site design. But I like the site template ( https://carap.ir/Mags/Karshenasi_Rang/karshenasi-Baghshani/ ). But unfortunately I do not know if this site is coded or ready-made templates are used. Thank you for your help.