More details in this Quirks mode Wikipedia article. Generally speaking, a browser switches to quirks mode if your page doesn’t include a DOCTYPE ( document type declaration), so to avoid quirks mode, make sure each page of your site includes a valid DOCTYPE. However, quirks modes can cause headaches if you’re building a modern, standards-compliant page, because a browser in quirks mode will render your page in its own unique, non-standard way. This allows older Web sites to work with modern browsers without having to recode their pages. Many browsers feature a “quirks mode” that emulates an older, buggier version of the browser. You can also use browser plugins, such as the Html Validator Firefox add-on, to check pages automatically while you’re viewing them in the browser. The W3C HTML Validator and CSS Validator are good places to start. Valid code might not make your page magically work in all browsers, but invalid code can produce all sorts of unpredictable and hard-to-debug problems. Run your HTML and CSS through validators before uploading your site. Your HTML should be for content, not style. Use ul and li elements to create a menu don’t use a table or a series of p elements. If your design has 7 free-floating sidebar boxes then you’re creating headaches for yourself down the line.ĭon’t use too many nested elements in your markup, and use the right element for the job. Keep your layout simple at the design stage: a header, a couple of side-by-side columns, and a footer. The more complex your markup and CSS, the more there is to go wrong. Here are ten useful tips for cross-browser coding. While there’s no “magic bullet” that will make a site look great on all browsers, there are a number of things you can do to improve your chances. This is often known as cross-browser (or multi-browser) coding. It’s best to build your Web pages so that they look consistent across a range of browsers. Different browsers display HTML and CSS in subtly different ways, while some browsers (we won’t name names) veer wildly from the standards. In practice, of course, things aren’t that simple. HTML and CSS are standards, so a page tested in one browser should look the same in all other browsers. In theory, building a Web page is simple: Throw together some HTML, test it in your browser, and upload.
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