I tried additional classes but it working with the content of my custom tab still not working with my custom tab. So who can help me how to add a class for custom tab?
code :-
<fieldset name="custom_tab">
<settings>
<label translate="true">Settings</label>
<imports>
<link name="visible">${ $.provider }:data.hide-export</link>
</imports>
</settings>
</fieldset>
