Have you ever wanted to apply Instagram-like filters to HTML elements? Well, now you can. The CSS Filter Effects specification, which is backed by Adobe, defines a mechanism for applying common ...

Using custom CSS, you can add a colored background to your posts without editing your posts in other ways and without changing the background of the rest of your blog's body.

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.