Thomas, adding H1 tag back in v12 was not straight forward, the best post I could find was https://helpcenter.websitex5.com/pt/post/137890

This is extremely simple in current versions.

I am not really good with HTML script. What version do you think would be good for me than Website X5 Evolution 12?

Purchase the latest version, the current one is v2020.3 but v2021.1 will be available shortly (& if you purchase now you will be entitled to the new version)

Evolution supports basic (automatic) H1, H2, H3 etc tags

https://www.websitex5.com/en/pricing.php

Be wary of purchasing from amazon/ebay/et al - these are frequently superseded versions

Thank You for all your help. I will do that.