MDN’s new design is in Beta! A sneak peek: https://blog.mozilla.org/opendesign/mdns-new-design-beta/
No estándar
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
La pseudo-clase :-moz-lwtheme es verdadera y seleccionada en los documento chrome cuando el atributo lightweightthemes del elemento raíz es true (verdadero) y se ha seleccionado un tema
:active:any [Traducir]:checked:default:dir():disabled:empty:enabled:first:first-child:first-of-type:fullscreen [Traducir]:focus:hover:indeterminate [Traducir]:in-range [Traducir]:invalid:lang [Traducir]:last-child:last-of-type:left [Traducir]:link [Traducir]:not():nth-child:nth-last-child:nth-last-of-type [Traducir]:nth-of-type:only-child:only-of-type [Traducir]:optional [Traducir]:out-of-range [Traducir]:read-only [Traducir]:read-write [Traducir]:required:right [Traducir]:root:scope [Traducir]:target:valid:visited [Traducir]after::-ms-fill [Traducir]::-ms-fill-lower [Traducir]::-ms-fill-upper [Traducir]::-ms-thumb [Traducir]::-ms-track [Traducir]::-moz-progress-bar [Traducir]::-moz-range-progress [Traducir]::-moz-range-thumb [Traducir]::-moz-range-track [Traducir]::-webkit-progress-bar [Traducir]::-webkit-progress-value [Traducir]::-webkit-slider-runnable-track [Traducir]::-webkit-slider-thumb [Traducir]before::first-letter (:first-letter) [Traducir]::first-line (:first-line) [Traducir]::selection::backdrop [Traducir]