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.

Obsolete since Gecko 59 (Firefox 59 / Thunderbird 59 / SeaMonkey 2.56)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

In Mozilla applications like Firefox, the -moz-border-right-colors CSS property sets a list of colors for the right border.

/* Single <color> value */
-moz-border-right-colors: #f0f0f0;

/* Multiple <color> values */
-moz-border-right-colors: #f0f0f0 #a0a0a0 #505050 #000000;

/* Global values */
-moz-border-right-colors: inherit;
-moz-border-right-colors: initial;
-moz-border-right-colors: unset;

When an element has a border that is larger than a single CSS pixel, each line of pixels uses the next color specified in this property, from the outside in. This eliminates the need for nested boxes. If the border is wider than the number of specified colors, the remaining part of the border is the innermost color specified.

Initial valuenone
Applies toall elements
Computed valueas specified
Animation typediscrete

It does not apply

  1. if border-style is dashed or dotted.
  2. to tables with border-collapse: collapse.



Accepts a white-space separated list of color values.

Specifies the color of a line of pixels of the right border. transparent is valid. See <color> values for possible units.
Default, no colors are drawn or border-color is used, if specified.

Formal syntax

<color>+ | none

<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>

<rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]? ) | rgb( <number>{3} [ / <alpha-value> ]? ) | rgb( <percentage>#{3} , <alpha-value>? ) | rgb( <number>#{3} , <alpha-value>? )
<rgba()> = rgba( <percentage>{3} [ / <alpha-value> ]? ) | rgba( <number>{3} [ / <alpha-value> ]? ) | rgba( <percentage>#{3} , <alpha-value>? ) | rgba( <number>#{3} , <alpha-value>? )
<hsl()> = hsl( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsl( <hue>, <percentage>, <percentage>, <alpha-value>? )
<hsla()> = hsla( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsla( <hue>, <percentage>, <percentage>, <alpha-value>? )

<alpha-value> = <number> | <percentage>
<hue> = <number> | <angle>


<div id="example">Example</div>
#example {
  padding: 20px;
  background-color: gray;
  border: 10px solid black;
  -moz-border-top-colors: #e00 #c30 #c50 #c60 #c70 #c80 #c90 #ca0 #cb0 #cc0;
  -moz-border-right-colors: red #f60 #f80 #f90 #fa0 #fb0 #fc0 #fd0 #fe0 #ff0;
  -moz-border-bottom-colors: red #f60 #f80 #f90 #fa0 #fb0 #fc0 #fd0 #fe0 #ff0;
  -moz-border-left-colors: #e00 #c30 #c50 #c60 #c70 #c80 #c90 #ca0 #cb0 #cc0;


This property is not part of any specification.

Browser compatibility

No compatibility data found. Please contribute data for "css.properties.-moz-border-right-colors" (depth: 1) to the MDN compatibility data repository.

See also