The following table lists all properties recognised by RCSS. The Notes column details important changes from the CSS specification.

Name Values Initial value Applies to Inherited Percentages Notes
align-content flex-start | flex-end | center | space-between | space-around | stretch stretch multi-line flex containers no    
align-items flex-start | flex-end | center | baseline | space-around | stretch stretch flex containers no    
align-self auto | flex-start | flex-end | center | baseline | space-around | stretch auto flex containers no    
animation See animations none all no    
background background-color         Excludes images, use decorators instead.
background-color <colour> transparent all no    
border border-width border-color         Excludes border style.
border-color border-top-color border-right-color border-bottom-color border-left-color          
border-top border-right border-bottom border-left border-<edge>-width border-<edge>-color         Excludes border style.
border-top-color border-right-color border-bottom-color border-left-color <color> black all no    
border-top-width border-right-width border-bottom-width border-left-width <length> | <percentage> 0px all no width of containing block  
border-width border-top-width border-right-width border-bottom-width border-left-width   all      
border-top-left-radius border-top-right-radius border-bottom-right-radius border-bottom-left-radius <length> 0px all no   Percentages and two-axis radii not supported.
border-radius border-top-left-radius border-top-right-radius border-bottom-right-radius border-bottom-left-radius   all      
bottom auto | <length> | <percentage> auto positioned elements no height of containing block  
box-sizing content-box | border-box content-box block and replaced inline elements no    
caret-color auto | <colour> auto all elements yes    
clear left | right | both | none none block-level elements no    
clip auto | none | always | <number> auto all no   Controls interaction with ancestor element’s clipping regions.
color <colour> black all yes    
column-gap <length> | <percentage> 0px table elements no initial width of table  
cursor <string> empty all yes   <string> refers an application specific cursor name.
decorator none | <name> | <type>( <properties> ) none all no   See decorators for details.
display inline | block | inline-block | flex | table | table-row-group | table-row | table-column-group | table-column | table-cell | none inline all no    
drag none | drag | drag-drop | block | clone none all no   Introduced for RCSS. Controls generation of drag messages.
fill-image <string> empty progress element no   <string> refers to a sprite name or an image url.
flex auto | none | <flex-grow> <flex-shrink>? <flex-basis>? | <flex-basis> 0 1 auto flex items no    
flex-basis <length> | <percentage> | auto auto flex items no    
flex-direction row | row-reverse | column | column-reverse row flex containers no    
flex-flow <flex-direction> <flex-wrap>          
flex-grow <number> 0 flex items no    
flex-shrink <number> 1 flex items no    
flex-wrap nowrap | wrap | wrap-reverse nowrap flex containers no    
focus none | auto auto all yes   Introduced for RCSS.
font font-style font-weight font-size font-family          
font-effect none | <type>( <properties> ) none all yes   See font effects for details.
font-family <string>   all yes   Only single family supported.
font-size <length> | <percentage> 12px all yes size of parent font  
font-style normal | italic normal all yes   ‘oblique’ not supported.
font-weight normal | bold | <number [1,1000]> normal all yes   Relative weights not supported.
gap row-gap column-gap   table elements     Replaces the CSS border-spacing property.
height <length> | <percentage> | auto auto block and replaced inline elements no height of containing block  
image-color <color> white <img> elements and decorators no   Introduced for RCSS.
justify-content flex-start | flex-end | center | space-between | space-around flex-start flex containers no    
left auto | <length> | <percentage> auto positioned elements no width of containing block  
line-height <number> | <length> | <percentage> 1.2 all yes font size ‘normal’ not supported.
margin margin-top margin-right margin-bottom margin-left          
margin-top margin-right margin-bottom margin-left <length> | <percentage> | auto 0px all no width of containing block  
max-height <length> | <percentage> | none none block and replaced inline elements no height of containing block  
min-height <length> | <percentage> 0px block and replaced inline elements no height of containing block  
max-width <length> | <percentage> | none none block and replaced inline elements no width of containing block  
min-width <length> | <percentage> 0px block and replaced inline elements no width of containing block  
opacity <number> 1 all yes    
overflow overflow-x overflow-y          
overflow-x visible | hidden | scroll | auto visible block elements no   Content clipped if either axis is not ‘visible’.
overflow-y visible | hidden | scroll | auto visible block elements no   Content clipped if either axis is not ‘visible’.
padding padding-top padding-right padding-bottom padding-left          
padding-top padding-right padding-bottom padding-left <length> | <percentage> 0px all no width of containing block  
perspective none | <length> none all no   See transforms.
pointer-events auto | none auto all yes    
position static | relative | absolute | fixed static all no   ‘fixed’ is positioned like ‘absolute’ but ignores scrolling.
right auto | <length> | <percentage> auto positioned elements no width of containing block  
row-gap <length> | <percentage> 0px table elements no initial height of table  
scrollbar-margin <length> 0px scrollbar-horizontal and scrollbar-vertical elements no   Introduced for RCSS. Specifies a bottom / right margin (depending on orientation) that will collapse with the scrollbar on the complementary axis.
tab-index none | auto none all no   Introduced for RCSS. Controls order of focus switching when the tab key is pressed.
text-align left | right | center left block-level elements yes   ‘justify’ not supported.
text-decoration none | underline | overline | line-through none all yes    
text-transform none | capitalize | uppercase | lowercase none all yes    
top auto | <length> | <percentage> auto positioned elements no height of containing block  
transition See transitions none all no    
transform See transforms none all no    
vertical-align baseline | sub | super | text-top | text-bottom | middle | top | bottom | <percentage> | <length> baseline inline-level elements no line-height  
visibility visible | hidden visible all no    
white-space normal | pre | nowrap | pre-wrap | pre-line normal all elements yes    
word-break normal | break-all | break-word normal all elements yes    
width <length> | <percentage> | auto auto block and replaced inline elements no width of containing block  
z-index <number> | auto auto all no   Applies to all elements. For documents, ‘auto’ allows pulling to front, otherwise remains at top or bottom.