CSS Errors and Warnings

In the css-File (cool-tag-cloud.css?ver=2.25) are 4 + 6 + 1 errors or warnings (acc. https://jigsaw.w3.org/css-validator):

In line 12, 27, 65, 78:
“border-color: none!important;” – is not allowed; use “border-style: none;”

In line 9, 24, 62, 75, 89, 98:
“text-shadow: 1px 1px 0 rgba(256,256,256,0.4)!important;” – the max value is 255, not 256

In line 336:
“.cool-tag-cloud .ctcpurple .ctcleft a:hover:after” – use 2 double poins with “after”:
“a:hover::after”