Default static product page tabs for this version look like this:
If you have exactly this version of Prestashop, just take my
product.tpl code from GitHub and overwrite
product.tpl page located in your theme folder. For previous versions create similar code around tab sections and tabs
ul on top. It will work.
Add my CSS and modify it to your needs, colors, font sizes, changes for responsive layouts etc.
I hide titles of tabs content in CSS, unhide if needed.
Also you’ll have to translate “Reviews” word from Translations > YourTheme inside Prestashop Back-End, if you have more languages enabled.
Here’s what you gonna get.