Could you please provide more information about the feature you need in this case? Do you need to change the route on a tab change and display the content of a different component?

I'm afraid it is not possible to completely separate the tab header from the content because both elements are part of the same component template.

If you just need to separate these elements visually, you can try to add some custom styles to the content container, for example:

.tab-content {
    margin-top: 100px;
}