Make header and content area transparent

Which theme are you using?

Twenty-ten

But i can use any if another is more appropriate

How familiar are you with CSS?

I am ok but not an expert

Download (and install) a Custom CSS Manager plugin.
Then apply CSS within the section of the dashboard allocated by that plugin, the CSS modification.

You’ll need to apply a background-image property and link to an image that has the opacity you want, to the HTML elements you want.

So using the Custom CSS Manager i can make the header and content area transparent? Take a look at https://www.deebat.dk, where you can see the background image, but the header and content area hides some of it..

Sorry, I can’t see the background image on that page https://awesomescreenshot.com/014r9pded

No my fault. So the idea is to put an image as background in the header and the content part (what is that called) and set the opacity at a low level to make the image transparent? Can i use any image or do it need to be a specific one? Imagine the opacity will make this obsolete?

So the idea is to put an image as background in the header and the content part (what is that called) and set the opacity at a low level to make the image transparent?

Yes.

Can i use any image or do it need to be a specific one?

I think the image needs to be a .png or .gif file extension to hold transparency, but any image is fine.

Can i use any image or do it need to be a specific one?

I think you need to make it. There may be some services online that make them for you, but I don’t know of any.

Imagine the opacity will make this obsolete?

Sorry, I don’t quite get what you’re asking for here.