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This chapter is from the book

Length Values

When describing length and width values in HTML and XHTML, values follow three conventions:

  • Pixels

  • Percentages

  • Relative sizing

Pixel values are written numerically. So, if you want to have a table be 500 pixels across, you'd simply write:

<table width="500">


As with colors, length values are presentational and are used in transitional documents. Style sheets are the current recommended method.

Percentage values are written numerically with a percent sign following. If you want your table to take up only half of the available screen space, you could write:

<table width="50%">

Relative sizing in the context of length values is a means of sizing something by having any leftover length be distributed appropriately. A good example of this is with frames, where you can use the "*" symbol to indicate that any remaining available space will be allotted accordingly.

Because length values are written numerically, they are considered to be case-neutral.

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