Use plain CSS3 (not supported in IE and <9)
img { box-shadow: 0px 0px 5px #fff; }
This will put a white glow around each image in your document, use a more specific selector to choose which images you like. You can change the color of course :)
If you are worried about users who do not have the latest versions of their browsers, use this:
img { -moz-box-shadow: 0 0 5px #fff; -webkit-box-shadow: 0 0 5px #fff; box-shadow: 0px 0px 5px #fff; }
For IE, you can use a glow filter (not sure which browsers support it)
img { filter:progid:DXImageTransform.Microsoft.Glow(Color=white,Strength=5); }
Play with the settings to see what suits you :)
Kyle Jun 21 2018-11-11T00: 00Z
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