Setting opacity on elements via CSS can be done quite easily but trying to do the same on CSS backgrounds without making the whole element transparent is quite impossible. However like all CSS workarounds, you just have to think creatively a little bit. In this article, Nicholas Cerminara of Scotch.io shared two different workarounds to set the opacity on CSS background images. The first is by using an image with “absolute” positioning to make it look like a CSS background. The other method is by controlling the background image using the :before or :after pseudo-elements.

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