How to Reference an Image File in a CSS Background Declaration When Your CSS File is in a Subdirectory?

Establishing the Background Image Path in CSS

In this article, we explore the methods for referencing an image file in a CSS background declaration.

Context

A developer encountered an issue where their background image was not being applied to an element. Their CSS file was located in the directory Project/Web/Support/Styles/file.css, and the image was in the directory Project/Web/images/image.png.

Failed Attempts

The developer unsuccessfully attempted several path variations:

background-image: url(/images/image.png);
background-image: url('/images/image.png');
background-image: url("images/image.png");
background-image: url(../images/image.png);
background-image: url('../images/image.png');
background-image: url("..images/image.png");

Solution

The solution lies in considering the context of the CSS file location. In this case, the CSS file is two levels deeper than the image file. Therefore, to reference the image correctly, the path should use two instances of "..", representing traversal up two levels in the directory structure:

background-image: url('../../images/image.png');

Now, the background image will be applied as expected in the web page.

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