Paste the following code into that section:body { background-image:url ('myImage.gif'); background-repeat:repeat; }This code defines a CSS selector that styles your document's body tag.

One way to add a background photo to any custom Tumblr theme is to embed a simple CSS tag at the right location in the theme's HTML code.

Google says images styled with CSS won’t be indexed in Image Search, advising developers to use HTML tags for important visuals. CSS background images aren’t indexed by Google Image Search ...