I’m currently creating a new Blog Page on my Wix Studio website. However, every time I create or edit a new blog post, the background appears black by default.
Are you still seeing this on your end @Myat_Noe_Aung?
I checked on my end but I don’t see anything similar on my side. I’ve seen similar things when users have dark mode extensions installed on their browser. I’d suggest see if the issue persists on an incognito browser and disable any extensions to see if it still replicates.
If it persists our Customer Care team can take a closer look via a screenshare. You can get in touch with them here - Contacting Wix Customer Care for Support | Help Center | Wix.com