CSS Validation for https://kvartborg.net/assets/css/style.css

Use the online CSS validator to check for w3c parse errors, warnings, and unsupported properties

Analyze CSS Complexity

Sorry! We found the following errors (8)

377 Unknown pseudo-element or pseudo-class ::selection [selection]
377 Unknown pseudo-element or pseudo-class ::selection [selection]
378 Unknown pseudo-element or pseudo-class ::selection [selection]
378 Unknown pseudo-element or pseudo-class ::selection [selection]
482 .line-numbers .line-numbers-rows Property pointer-events doesn't exist : none
494 .line-numbers .line-numbers-rows Property user-select doesn't exist : none
497 .line-numbers-rows > span Property pointer-events doesn't exist : none
822 .browser pre[class*="language-"], .browser code Too many values or values are not recognized : none

Warnings (14)

364 Property -moz-tab-size is an unknown vendor extension
365 Property -o-tab-size is an unknown vendor extension
367 Property -webkit-hyphens is an unknown vendor extension
368 Property -moz-hyphens is an unknown vendor extension
369 Property -ms-hyphens is an unknown vendor extension
372 ::-moz-selection is an unknown vendor extended pseudo-element
372 ::-moz-selection is an unknown vendor extended pseudo-element
373 ::-moz-selection is an unknown vendor extended pseudo-element
373 ::-moz-selection is an unknown vendor extended pseudo-element
491 Property -webkit-user-select is an unknown vendor extension
492 Property -moz-user-select is an unknown vendor extension
493 Property -ms-user-select is an unknown vendor extension
669 Property -webkit-box-sizing is an unknown vendor extension
670 Property -moz-box-sizing is an unknown vendor extension