A GIF is an animated image type - you can follow the steps below to add a GIF to your website.
Click “Content” in the top menu
Click “Images” in the right-hand menu
Click the green ‘Add Image’ button and upload the GIF.
Please note, for a GIF to work on your website it has to be uploaded through the “Images” area of your account first.
You can then add the GIF either as a logo in your header or on any of your pages in the same way you would a regular image. Both when previewing in your account and on your live site, you will see the GIF working straight away.