Step 2. Click anywhere inside the code area and press the CTRL + F keys to open the search box
Step 3. Type this tag insite the search box and hit Enter to find it:
</head>Step 4. Just above the </head> tag, paste the following CSS style with the b:if conditional tags that will apply the style to the chosen page:
<b:if cond='data:blog.url == "http://yourblog.com/page-name.html"'>Custom Background in a Specific Page
- change http://yourblog.com/page-name.html with the URL address of your blogger post or page where you want to apply the custom background. If you don't have a domain, your blog might be redirected to a country specific url; in this case, you may need to edit the blog address so that it ends with .com
- change http://DIRECT_LINK_TO_BACKGROUND_IMAGE.com/IMAGE.JPG with the direct link of the background image that you want to use.
Step 5. Hit the 'Save template' button and you're done. Now, visit the page and check to see if the background has changed. If you want to change the background in another Blogger page, repeat the steps from above.