Hello eunhye, I hope you are well. Thank you for being part of the GoDaddy community. You could remove your header content and replace with a "gallery" section - there is an option to make slide show "full width." Please follow the steps below to use a gallery as your header. 1. Click on your current header to open up the header editor 2. Go through each part of the header to remove/turn off the content (cover image, action button, headline, paragraph, …) 3. You should see that the old header is gone 4. Add the third photo gallery (titled “Slideshow best for horizontal images”) 5. Toggle the gallery to be Full Width
Now you should have a slideshow as your header! I recommend removing the Photo Gallery Title, but up to you.