HTML validator:
https://validator.w3.org/nu/?doc=https%3A%2F%2Fberobi.github.io%2Fkepregeny%2Findex.html
Mobilbarát weboldal:
https://search.google.com/test/mobile-friendly/result?id=t3BUFv1vl0d3EZjj4P3J2w&hl=hu
Betöltési sebesség:
https://pagespeed.web.dev/report?url=https%3A%2F%2Fberobi.github.io%2Fkepregeny%2F