The universal selector can be very useful if you are creating a 3rd party widget for any other website to use and you don't want their css to affect you. Then you can do something like:
#my-widget > *
position: relative !important;
padding: 0 !important;
margin: 0 !important;
.. etc ..
Which can act like css reset just for the elements contained within the widget you are creating.
Nice, that's a really good workaround for specificity issues!
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