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Steven Parker
231,269 PointsAn attribute might have a string value, but that would be an entire string. A "substring" is just a part of a string.
For example, in a string containing the word "balloon", one possible substring of it would be "all". So if we had a "contains" selector for class like this:
div[class*="all"] { }
This would match a div
element that had the class "balloon", but it would also match one with a class of "fallout" or "wall".