logo in header

btw I just upgraded to wordpress version 3.5 and the updated theme twenty eleven, but it still did not help.

CSS is very theme/site specific, so you can’t copy it from one to another.

But before you do anything, do you have a child theme or custom CSS set up? Making changes to theme files is a very bad idea — particularly with a default WP theme.

ahh yes. I forgot that.
I have now applied a child theme to my website.

The child theme has two specific files.
style.css and rtl.css

can I write anything in these to add a logo to the header?

Yep, do you want the same basic layout as the other site?

Yes please.
The logos are also very similar. The one on the new site just has a green background to it.

Will I be able to change the position of the logo from the left side to the right side of the title text, if I wish to change it?

Try this in the new stylesheet:

#branding hgroup {
    background: url("") no-repeat;
}

Put the URL to the image in the space above — once it’s showing on the page, we can fix the positioning.

ok I have placed it in the file, but as you can see, it’s too big etc… what do I type now?

ahh… I’m making the logo smaller on my desktop and upload it to the ftp-server.

and I could use some of the old code too: padding: 15px 0px 30px 120px;

Now I just need to position it better, but I’m out of ideas now.

Okay, looks go, but we need to do some more CSS – you should actually remove the padding that you added to the above CSS. So in your child, try this:

#branding hgroup {
    background: url("https://viborghallen.dk/wp-content/themes/twentyeleven/vhm-logo.png") no-repeat scroll 0 0 transparent;
    margin: 20px 0 0 10px;
}

#site-title, #site-description {
    margin-left: 150px;
}

See what that looks like.

Thank you so much. It’s awesome ??

Though I noticed a small thing. The title is moved down, when the logo is moved too. So the title and the search box don’t line up.
How do I avoid moving the title down?

Try adding this:

#site-title {
    padding: 2.65625em 0 0;
}

Adjust the padding number in the above – so it aligns how you want it.

It does look nice — I like your logo a lot :).

Well thank you ??

I have tried to insert the last part, but when I do so, the logo gets “cut off”. It looks like there is a white margin above the banner.

Is there a way to let the logo get on top of that, or can the margin or padding from the banner be decreased in some way?