Tableless Web Layout
It takes more time ensuring a layout is XHTML and CSS valid, but the advantages are that the xhtml code is clean and correct according to the W3C standards which means that the readability of the code is improved for the search engine spiders.
div {
float: left;
width: 33%;
}
Working with an almost table-less code structure also makes the page easier to be read by the search engine robots since there are less html tags to read. Xhtml code and table-less layouts are recommended for search engine optimization (SEO).
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