Building the User Interface by Using HTML5: Text, Graphics ... - server

Building the User Interface by Using HTML5: Text, Graphics, and Media | 33This makes sense because you can easily change styles in CSS that apply across a Web page oreven a Web site. Inserting individual styles throughout even a single Web page can be timeconsuming to modify when a change becomes necessary.The following HTML elements are considered deprecated and are not supported inHTML5 pages:LICENSED PRODUCT NOT FOR RESALE• : Defines acronyms in HTML 4 that can be spoken as if they are a singleword, such as GUI for graphical user interface. Use the tag instead.• : Defines an embedded applet. Use the tag instead.• : Defines a default font color, font size, or font family for all the text in adocument. Use CSS for applying all fonts.• : Makes text bigger relative to the current font size. Use CSS instead.• : Center-aligns text and content. Use CSS instead.• : Defines a directory list. Use the tag instead.• : Specifies the font face, font size, and font color of text. Use CSS instead.• : Defines a particular frame (a window) within a frameset (see the nextbulleted item).• : Defines a frameset for organizing multiple frames (windows).• : Displays text for browsers that don’t support frames.• : Defines strikethrough text. Use the tag instead for small amounts oftext, or use CSS for large blocks of text.• : Defines teletype or monospaced text. Use the tag or CSS instead.Just because an element isn’t supported doesn’t mean it won’t work within certain browsers.Many users still use older versions of browsers, and many deprecated elements render well inthose browsers. However, a best practice is to create pages assuming Web page visitors use acurrent or near-current browser, which means using the latest HTML elements. If you knowall of your Web page visitors use an older browser version, it’s acceptable to use deprecatedelements. Regardless, if you need to apply a lot of formatting to any Web page, it’s best to useCSS for efficiency.The following attributes are not used in HTML5, although these attributes are not actuallypart of any HTML specification:• bgcolor: Applies a specified background color to whatever content its associatedelement describes, which is usually a table or a page. Use the CSS propertybackground-color instead.• bordercolor: Applies a specified color to the cell of a table. Use the border-colorCSS property instead.• bordercolorlight: Applies a specified color to the upper and left corners of a tablecell. Use the border-color CSS property instead.• bordercolordark: Applies a specified color to the lower and right corners of a tablecell. Use the border-color CSS property instead.Like with deprecated elements, you may use these attributes if you know that your Web pagevisitors use older browsers. Be aware that your attempts to validate your Web page will resultin errors, which you can ignore if you’re certain your visitors’ browsers support the attributes.✚ MORE INFORMATIONTo find out about new features of HTML5, browse the “Learn HTML5 in 5 Minutes!” Web page athttp://msdn.microsoft.com/en-us/hh549253 and the W3C “HTML elements” Web page athttp://dev.w3.org/html5/markup/elements.html#elements.