tabtastic-headings.css

/* Change Tabtastic Tab Nav to a Heading like h5 */
/* Put code in Custom LESS/CSS Box in DMS Custom Tab */

/* Section FullTabs */

.section-fulltabs .nav a {
  font-family: @headingsFontFamily; /* From DMS Typography Settings */
  font-size: @h5Size; /* Grab heading size, can use @h1Size through @h6size */
  font-weight: @headingsFontWeight; /* From DMS Typography Settings */
}

/* Section QuickTabs */

.section-quicktabs .nav a {
  font-family: @headingsFontFamily; /* From DMS Typography Settings */
  font-size: @h5Size; /* Grab heading size, can use @h1Size through @h6size */
  font-weight: @headingsFontWeight; /* From DMS Typography Settings */
}