Why strict dtd

In a sense it is, since it requires that all elements are properly closed and that attribute values are quoted. And HTML 4. But Strict is what you should be aiming for. It encourages, and in some cases enforces, the separation of structure and presentation, moving the presentational aspects from markup to CSS. This is HTML 4. An additional benefit of using a Strict DOCTYPE is that doing so will ensure that browsers use their strictest, most standards compliant rendering modes.

For modern HTML5 documents the doctype declaration should be as follows:. While no longer in general use, there are several other doctype declaration types from previous versions of HTML.

There are also specific versions for XML documents. To read more about these, and to see code examples for each, take a look at the Wikipedia article. If this article was helpful, tweet it. Learn to code for free. Get started. Forum Donate. Common Title:. Article Type:. Display a Table of Contents:. Article Summary:. Cancel Publish. It is low-quality It is spam It does not belong here Other enter below.

Thank you for reporting this content, moderators have been notified of your submission. The DTD specifies the rules for the markup language, so that the browsers can render the content follows the rules of that markup language i. Your design will include web 2. Stay in touch with your growing membership. Promote events, products and services at very low cost.

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Quirks vs Standards Mode In addition to these versions, there are also two rendering modes. Loose Loose mode will allow old deprecated tags and markup to be used and CSS will be rendered in quirks mode. Call Enter your details for a free analysis of your current or proposed web strategy.