I've been attempting to achieve a 70% transparent black background on an element, but unfortunately, I had to use a pixel to address browser compatibility problems. Using CSS alone would make the entire content of the element transparent as well.
Here is the image:
Any thoughts on why the pixel isn't displaying as transparent? I created the PNG image in Paint.NET and set the transparency settings accordingly.
To achieve a semi-transparent background, use the CSS property background: rgba(0, 0, 0, 0.48); where 0.48 represents the opacity level.
Here is an example on JSFiddle: http://jsfiddle.net/jimmylovecraft/U78bk/
Ensure that the png file is saved in 32-bit format in order to maintain alpha transparency. If it is saved as 8-bit or 24-bit, the transparency may not be visible.
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