The -moz-appearance CSS property is used in Gecko (Firefox) to display an element using a platform-native styling based on the operating system's theme.

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API Non-standard Property

The HTML <image> element was an experimental element designed to display pictures. It never was implemented and the standard <img> element must be used.

HTML Non-standard

The ::-moz-placeholder pseudo-element represents any form element displaying placeholder text. This allows web developers and theme designers to customize the appearance of placeholder text, which is a light grey color by default. This may not work well if you've changed the background color of your form fields to be a similar color, for example, so you can use this pseudo-element to change the placeholder text color.

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The -webkit-mask-position-x CSS property sets the initial horizontal position of a mask image.

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The -webkit-mask-position-y CSS property sets the initial vertical position of a mask image.

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Returns a sidebar object, which contains several methods for registering add-ons with browser.

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CSS CSS Reference Non-standard

CSS CSS Reference Non-standard

The :-moz-lwtheme-brighttext pseudo-class matches in chrome documents when :-moz-lwtheme is true and a lightweight theme with a bright text color is selected.

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CSS CSS Reference Non-standard

CSS CSS Reference Non-standard

CSS CSS Reference Non-standard

The -moz-orient CSS property specifies the orientation of the element to which it's applied.

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In Mozilla applications like Firefox, the -moz-outline-radius CSS property can be used to give outlines rounded corners. An outline is a line that is drawn around elements, outside the border edge, to make the element stand out.

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In Mozilla applications, -moz-user-input determines if an element will accept user input. A similar property user-focus was proposed in early drafts of a predecessor of the CSS3 UI specification but was rejected by the working group.

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The -webkit-box-reflect CSS property lets you reflect the content of an element in one specific direction.

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API DOM Method Non-standard