Solved Header Style 11 Error

Probably there's an issue with the import. It's treating the CSS in code module as text.

Try the below:
1. Try to edit the custom header style in WP Admin > Divi > DU - Header > Header Style 11
2. You will see that there are two code module: Hide Header & Footer on Visual Builder & Override blurb padding
3. You should see that the CSS is wrapped with <style></style>. See screenshot below:



4. If your code module CSS is not wrapped with <style></style>, then try to add it & see if it works.
5. If already wrapped but still not working, then try to copy them & add it in a new code module & see if it works.

If you're referring to Wordpress Multisite, I believe that they doesn't allow plugin installation in sub-sites. Everything will need to be done in the Network Admin. Once installed in the Network Admin, all sub-sites will be able to use the plugins / themes.
**But for the Divi Library items (xml import), you will need to do it for each sites.

 

Kindly check your PM.

 

Seems like your server firewall or security plugin is taking away the <style> tag whenever you save it.

For a quick workaround, just copy the CSS into WP Admin > Divi > Theme Options > Custom CSS & delete the code module.