If you want, you can choose a logo or an avatar for your event page, using the icon “add logo/avatar” placed at the center of the page.
It’s a perfect choice if your event is a company event, but you can also insert your photo/symbol for a personal event.
You can choose whether to display an edge to your logo, you can find all the functions in “event options” in the menu on the left side of the creation page of the event.
Don’t worry: if you don’t insert anything, you won’t see an empty box!