Thanks Mohammad for the code.
Can you guys replace your current functions.js inside wp-content/dante/js/ by the one attached in the link below. It has some enhancements over my colleague code.
https://www.dropbox.com/sh/ynqgk1h550nwtnl/AAB3vRmc9sfUZegjW2knQARCa?dl=0
The difference of implementing it’s just the class name that my colleague provided earlier, that I changed to tab-open
<a href="#tab2" class="tab-open" >This is a link</a>
Clear the cache before testing.
-Rui