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Test on Mozilla Firefox 27

Perform real time live interactive testing of your webapp, website for cross browser compatibility on the latest Mozilla Firefox version 27. You can test your web application for functionality, visual bugs, and a lot more by performing cross browser testing.

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Custom Elements v1

Method of defining new HTML tags.

Dialog element

Method of easily creating custom dialog boxes to display to the user with modal or non-modal options. Also includes a ::backdrop pseudo-element for behind the element.

Minimum length attribute for input fields

Declares a lower bound on the number of characters a user can input.

CSS color-adjust

The color-adjust (or -webkit-print-color-adjust as prefixed in WebKit/Blink browsers) property is a non-standard CSS extension that can be used to force printing of background colors and images.

prefers-reduced-motion media query

CSS media query based on a user preference for preferring reduced motion (animation, etc).

CSS @apply rule

Allows a set of CSS properties to be applied using a named variable

CSS image-set

Method of letting the browser pick the most appropriate CSS background image from a given set, primarily for high PPI screens.

CSS text-justify

CSS property to define how text should be justified when text-align: justify is set.

CSS Device Adaptation

A standard way to override the size of viewport in web page using the @viewport rule, standardizing and replacing Apple's own popular <"meta> viewport implementation.

#rrggbbaa hex color notation

The CSS Color Module Level 4 defines new 4 & 8 character hex notation for color to include the opacity level.

Information sourced from

"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

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