After running a CSS3 validation, I encountered the following error messages.
The property -webkit-border-radius is flagged as an unknown vendor extension
The property -moz-border-radius is identified as an unknown vendor extension
The property -webkit-border-radius is labeled as an unknown vendor extension
Is there a way to achieve 100% CSS3 validity?
-webkit-border-radius: 50%;
-moz-border-radius: 50%;
border-radius: 50%;
While eliminating the prefixed properties would render it fully valid, it may also compromise compatibility with older browser versions they are intended for. Nevertheless, given that these properties have been in use for a considerable amount of time, removing them is unlikely to significantly affect browser support.
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