Ah, I get it. The answer is usually "create a child theme!"
wp-content/themes directory, create an empty directory called
coraline-child. In that directory create a file named
style.css and copy in these lines below into that file.
Theme Name: Coraline Child Theme
Author: Self-Help WordPress User
/* Start child theme CSS here */
background: rgb(255, 255, 255); /* The Fallback */
background: rgba(255, 255, 255, 1);
You can copy the file from this Pastebin link too. http://pastebin.com/5dhAeLjq
This assumes you use the default layout which is
This will make the
header and all it's elements have a fixed position, have a solid white background, and will be on top of other divs and elements.
content-box will start with a
300px margin on top. This matches the height of the
If you create that one file
wp-content/themes/coraline-child/style.css and then activate the new "Coraline Child Theme", then you may get the effect you are looking for.