You need to follow these steps:
- Step 1: Go to Pages > Add New Page. In Template box, choose “Front Page” and choose “Big Carousel” in Header Style box and save.
- Step 2: Go to Appearance > Theme Options > Main Navigation choose Light in Top Navigation Style
- Step 3: If you want that page to be the Homepage, go to Settings > Reading > A Static Page > select Front Page.
Please check the DEMO of TrueMag Light Version here