Casper header problem

I want to stick my header in the Casper theme but I don’t want to change it on the theme directory, instead, I want to do the style in code injection can someone guide me, please

I am trying since yesterday but I didn’t find a solution to it

If I understand your question correctly, to change the image in the header on the Casper theme, you need to visit this page yourwebsite.com/ghost/#/settings?showBrandingModal=true and remove the “Publication Cover” on the bottom left of screen and replace with your image.

Or are you referring to replacing the header HTML completely with some other HTML? Because you can’t replace HTML using CSS in code injection. You could do it with JavaScript but it would be easier to just modify the theme template…

I want a header like these

I want to stick my header navigation to the top on both mobile and desktop view

I want a header like these

The creator of that site wrote about how he did that on this page under the heading, Add a sticky “About” section to the front page.

I want to stick my header navigation to the top on both mobile and desktop view

It isn’t clear to me what you’re asking for here, sorry. Perhaps somebody else can answer your question.

P.S. I believe @dana is the creator of Hooshmand.net.

Thanks