The CSS applied here is the following:
P { color: black; }
.ybox { background-color: yellow; }
P.gbox { background-color: #9F9; }
.rbox { background-color: #F99; }
P.bbox { background-color: #AAF; }
P { border-style: none; border-width: 0; }
.wbord { border-width: medium; }
.sbord { border-style: solid; }
This paragraph should have a yellow background.
This paragraph should have a green background.
This paragraph should have a red background.
This paragraph should have a blue background.
This paragraph should have a green background because gbox is more specific.
This paragraph should have a green background because gbox is more specific.
This paragraph should have a green background because gbox is more specific.
This paragraph should have a green background because gbox is more specific.
This paragraph should have a blue background because bbox is more specific.
This paragraph should have a blue background because bbox is more specific.
This paragraph should have a blue background because bbox is more specific.
This paragraph should have a blue background because bbox is more specific.
This paragraph should have a red background because rbox is specified later in the stylesheet.
This paragraph should have a red background because rbox is specified later in the stylesheet.
This paragraph should have a blue background because bbox is specified later in the stylesheet.
This paragraph should have a blue background because bbox is specified later in the stylesheet.
This paragraph should have a green background because gbox is more specific.
This paragraph should have a green background because gbox is more specific.
This paragraph should have a green background because gbox is more specific.
This paragraph should have a green background because gbox is more specific.
This paragraph should have a green background because gbox is more specific.
This paragraph should have a green background because gbox is more specific.
This paragraph should have a blue background because bbox is more specific.
This paragraph should have a blue background because bbox is more specific.
This paragraph should have a blue background because bbox is more specific.
This paragraph should have a blue background because bbox is more specific.
This paragraph should have a blue background because bbox is more specific.
This paragraph should have a blue background because bbox is more specific.
This paragraph should have a blue background because bbox is more specific than rbox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than rbox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than rbox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than rbox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than rbox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than rbox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than ybox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than ybox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than ybox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than ybox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than ybox and comes later than gbox.
This paragraph should have a blue background because bbox is more specific than ybox and comes later than gbox.
This paragraph should not have a border because border-width is 0.
This paragraph should not have a border because border-style is none.
This paragraph should have a medium solid border.
(Back to CSS Testing Information, David Baron)