1 Test for http://bugs.webkit.org/show_bug.cgi?id=9284 Quirksmode (CSS1): Removing inline border styles is impossible.
3 Starting with a declaration containing all properties that are constituents of shortcuts, see what is removed when a shortcut property is removed. The shortcut’s constituents and only them should be removed.
6 removes "background-image, background-attachment, background-color, background-position, background-repeat"
8 Removing background-position
9 removes "background-position"
16 and adds "border-right-width, border-bottom-width, border-left-width, border-right-style, border-bottom-style, border-left-style, border-right-color, border-bottom-color, border-left-color".
19 and adds "border-top-width, border-bottom-width, border-left-width, border-top-style, border-bottom-style, border-left-style, border-top-color, border-bottom-color, border-left-color".
20 Removing border-bottom
22 and adds "border-top-width, border-right-width, border-left-width, border-top-style, border-right-style, border-left-style, border-top-color, border-right-color, border-left-color".
25 and adds "border-top-width, border-right-width, border-bottom-width, border-top-style, border-right-style, border-bottom-style, border-top-color, border-right-color, border-bottom-color".
35 Removing border-radius
36 removes "border-top-left-radius, border-top-right-radius, border-bottom-right-radius, border-bottom-left-radius"
38 Removing -webkit-border-radius
39 removes "border-top-left-radius, border-top-right-radius, border-bottom-right-radius, border-bottom-left-radius"
41 Removing border-spacing
42 removes "border-spacing"
44 Removing -webkit-columns
45 removes "-webkit-column-width, -webkit-column-count"
47 Removing -webkit-column-rule
48 removes "-webkit-column-rule-width, -webkit-column-rule-style, -webkit-column-rule-color"
51 removes "list-style-type, list-style-position, list-style-image"
56 Removing -webkit-margin-collapse
57 removes "-webkit-margin-before-collapse, -webkit-margin-after-collapse"
59 Removing -webkit-marquee
60 removes "-webkit-marquee-direction, -webkit-marquee-increment, -webkit-marquee-repetition, -webkit-marquee-style, -webkit-marquee-speed"
63 removes "-webkit-mask"
65 Removing -webkit-mask-position
66 removes "-webkit-mask"
67 and adds "-webkit-mask".
74 Removing -webkit-text-stroke
75 removes "-webkit-text-stroke-color, -webkit-text-stroke-width"