Is it possible to set the size of the background image with CSS? I want to do something like: background: url('bg.gif') top repeat-y; background-size: 490px; But it. Value Description Play it; auto: Default value. The background-image contains its width and height: Play it » length: Sets the width and height of the background image. Property Definition Description background-color: Sets the background colour of the HTML element. There are several ways to indicate background-color, including RGB. Use CSS properties to have more control about how background images are used. Sorry, but this is a pretty old post here. Background images really aren’t safe to use in HTML emails. Outlook used to be one of the few email programs that would. Creating Scrolling Parallax Effects with CSS. Introduction For quite a long time now websites with the so called parallax effect have been really popular. This property sets the background image(s) of an element. Images are drawn with the first specified one on top (closest to the user) and each subsequent image. In this tutorial, we’ll go over the simplest technique for making a background image fully stretch out to cover the entire browser viewport. Above answers considers only Design aspect. I am listing it in SEO aspects. When to use img / When Your Image need to be indexed by search engine CSS background properties are used to define the background effects of an element. CSS properties used for background effects: background-color.