Firefox Browser Compatibility Browser Compatibility
These guidelines detect Firefox browser compatibility issues.
Rules
isattribute has partial supportdataelement has partial supportdetailselement has partial supportnameattribute ondetailselements has partial supportdialogelement has partial supportsrcdocattribute has partial supportinput type=colorhas partial supportlistoninput type=colorhas partial supportinput type=datehas partial supportinput type=datetime-localhas partial supportinput type=numberhas partial support- Insecure password field
input type=rangehas partial supportlistoninput type=rangehas partial supportinput type=timehas partial support- HTML imports are no longer supported
- MathML has partial support
menuelement has partial supportmenuitemelement has partial supportmeta http-equiv=Set-Cookieno longer supportedmeterelement has partial supportcodebaseonobjectis no longer supportedreversedattribute has partial supportoutputelement has partial supportpopoverattribute has partial support- Script modules have partial support
- Script MIME type with partial support
- Scoped stylesheets unsupported
xml:baseis unsupportedsummaryelement has partial supporttemplateelement has partial supporttrackelement has partial supportisindexelement is unsupported@counter-stylehas partial support@layerhas partial support@propertyhas partial supportall:property has partial supportbackground-repeattwo value syntax has partial supportbackground-repeatfour value syntax has partial supportbackdrop-filter:property has partial supportborder-block-andborder-inline-properties have partial supportborder-start-start-radius:property has partial supportborder-start-end-radius:property has partial supportborder-end-start-radius:property has partial supportborder-end-end-radius:property has partial supportgrid:property has partial supportrevertCSS keyword has partial support-moz-border-radius:property is unsupported-moz-box-shadow:property is unsupportedclip-path:property has partial support- CSS
light-dark()function has partial support - CSS
color-mix()function has partial support - CSS
color()function has partial support hsl()colors with 4 values have partial supporthsla()colors with 3 values have partial supporthwb()colors have partial supportlab()colors have partial supportlch()colors have partial supportoklab()colors have partial supportoklch()colors have partial supportrgb()colors with 4 values have partial supportrgba()colors with 3 values have partial supportmargin-block-andmargin-inline-properties have partial supportmask:property has partial supportcalc()in media queries has partial support- Media query ranges have partial support
overflow-block:andoverflow-inline:properties have partial supportpadding-block-andpadding-inline-properties have partial supportpage-break-after:withavoid,leftorrighthas partial supportpage-break-before:withavoid,leftorrighthas partial supportposition: stickyproperty has partial support:any-linkselector has partial support::details-contentselector has partial support:dir()selector has partial support:focus-withinselector has partial support:focus-visibleselector has partial support:has()selector has partial support:in-rangeselector has partial support:is()selector has partial support:modalselector has partial support:out-of-rangeselector has partial support:popover-openselector has partial support:read-onlyselector has partial support:read-writeselector has partial support:state()selector has partial support:user-invalidselector has partial support:user-validselector has partial support:visitedselector has partial support:where()selector has partial supportshape-outside:property has partial supportcapunit has partial supportcq*units have partial supporticunit has partial supportlhunit has partial supportqunit has partial supportrlhunits have partial supportsv*,lv*anddv*units have partial supportxunit has partial support- Mixed content warning
- AVIF images have partial support
- WebP images have partial support
- Non-standard image format
- Java applets are unsupported
document.allis a legacy Microsoft extensiondocument.writedoes not work in XHTML pagescounter-set:property has partial supportorphans:property has partial supportpage-break-inside:property has partial supportwidows:property has partial supportdisplay: inline-blockhas partial supportoverflow: cliphas partial supportwhite-space: pre-wraphas partial supportwhite-space: pre-linehas partial supportopacity:percentage values have partial supportscale:property has partial supportrotate:property has partial supporttext-shadow:property has partial supporttransform:property has partial supporttranslate:property has partial support- Image maps with
idbut nonamehave partial support compactattribute is unsupporteddisplay: compactis unsupported-moz-opacity:property is unsupportedElement.outerTextproperty has partial supportblinkelement is unsupportedilayerelement is unsupportedkeygenelement has very limited supportlayerelement is unsupportedrubyelement has partial supportxmlelement is unsupporteddiv srcattribute is unsupportedimg dynsrcattribute is unsupportedimg controlsattribute is unsupportedimg loopattribute is unsupportedimg startattribute is unsupportedbordercolor,bordercolordarkandbordercolorlightare unsupportedtopmarginattribute has partial supportleftmarginattribute has partial supportbottommarginattribute has partial supportrightmarginattribute has partial supportview-source:URL scheme has partial support- Silverlight no longer supported