Description drop down automatically opens (focal)

[RVWebsitehelp]

I am in the process of editing a new theme but I have an issue with the 1st product description tab automatically opening when landing on the page. How can I turn this off with simple coding? As there is no feature to toggle this on or off. The theme is the focal theme

Many thanks

[RVWebsitehelp]

The store is not yet live nor have I purchased the store but I am going to in a few weeks time. Will this have an effect?