Add logo above haeder image

Hi guys,

My css is pretty basic, but I’ve managed to remove the site title and site discription. Now I want to add my logo above the current header image.

The website is:

http://acupunctuurbaidu.ophetweb.nu/

I’ve tried this, but it didn’t work:
————————-

#branding {
background: url (‘http://acupunctuurbaidu.ophetweb.nu/wp-content/uploads/2014/02/2-logo_Groot.png’) center 25px no-repeat;
}