You may also add your own images to have them displayed randomly. If you
place your images in the wp-content/themes/techozoic-fluid/images/headers/
folder they will be displayed along with the other images at random.
The best dimensions for your images are 1000px Wide X 200px High.
If you don’t have a header of your own you could google website header images.
There you will find free website header options. Once you select on a header that
fits your niche you will “save as” to your desktop.