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Image Filtering with CSS
Page 5 —
Drop Shadow
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This single filter could remove most of the structural abuses that have already begun to crop up with stylesheets. One of the tricks people use with stylesheets is to write a statement twice and then mash the two together so it looks like there's a drop shadow. Of course, as many Web purists point out, you have then made your page unusable, because you've written the sentence twice or more, and that doesn't make sense to someone who can't see the effect.
Filter: DropShadow(Color=The color of the drop shadow, OffX=How many pixels Horizontally, OffY=How many pixels Vertically, Positive=What gets shadowed, visible or invisible pixels)
Color is the color of the drop shadow, expressed, as always, in hex format (#RRGGBB). OffX and OffY are the number of pixels the drop
shadow should be from the object. Positive is a Boolean (0 or 1) value; if "0," then the transparent pixels are shadow; if "1," then the nontransparent pixels are shadowed.
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Example:
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