background
background-attachment
background-color
background-image
background-position
background-repeat
border
border-bottom
border-bottom-color
border-bottom-style
border-bottom-width
border-collapse
border-color
border-left
border-left-color
border-left-style
border-left-width
border-right
border-right-color
border-right-style
border-right-width
border-style
border-top
border-top-color
border-top-style
border-top-width
border-width
bottom
caption-side
clear
clip
color
content
counter-increment
counter-reset
cursor
direction
display
empty-cells
float
font
font-family
font-size
font-style
font-variant
font-weight
height
left
letter-spacing
line-height
list-style
list-style-image
list-style-position
list-style-type
armenian, and georgian not working
margin
margins given as percentage are not working
margin-bottom
margin-left
margin-right
margin-top
max-height
max-width
min-height
min-width
orphans
outline
outline-color
outline-style
outline-width
overflow
padding
padding-bottom
padding-left
padding-right
padding-top
page-break-after
page-break-before
page-break-inside
position
quotes
right
table-layout
text-align
text-decoration
blink not working
text-indent
text-transform
top
unicode-bidi
vertical-align
only sub and super are working
visibility
white-space
widows
width
word-spacing
z-index
Other tests:
underline/strike/overline line thickness
discard syntax errors
CSS on HTML element
BODY background color
!important
border, background, and margin
adjacent sibling selectors
collapsing margins