Wednesday 10th of February 2016 11:41:30 AM

CSS Style Guide


This Style Guide explains the markup and design requirements for web projects, along with various standards and best practices.

projects authored in valid XHTML 1.0 Transitional and styled with valid Cascading Style Sheets will be described here. See the XHTML and CSS sections below for details. Additional sections of this Style Guide, coming soon, will provide information on writing for the web, naming and filing your documents, and other useful topics and guidelines.

XHTML: Guidelines & Benefits

Library projects must be authored in structural XHTML 1.0 Transitional. Page authors should follow accessibility guidelines in compliance with U.S. Law, and so that our site’s content will be made available to the widest possible number of people, browsers, and Internet devices. In addition, all XHTML must validate.

XHTML Guidelines
The rules of XHTML as compared to HTML—an easy transition
What is XML?
A brief introduction to the foundation of XHTML
XHTML Benefits
Four key benefits of converting from HTML to XHTML
XHTML Authoring Tips & Tools
Simplifying the work process—includes tips on thinking structurally, and tools for hand-coders and Dreamweaver users
XHTML Accessibility Tips
Making sure your pages can be read by all visitors, browsers, and devices
XHTML Validation
Ensuring interoperability by avoiding errors and sticking to standards

Reproducing Colors

Consistent colorreproduction is, as it happens, a major issue unto itself. Aswe'll soon see, all colors can be specified in a consistentmanner, which would seem to solve the issue of whether two differentuser agents will display the same color. In fact, the situation ismuch more complicated. In the first place, human perception isrelative. The same color displayed on the same monitor may appear to

CSS: Style Sheets & Tips

Library projects must use valid Cascading Style Sheets (CSS) to control typography, color, and other layout elements. Style Sheets must be linked in a way that accommodates the capabilities of new and old browsers.

CSS Guidelines
Tips on authoring and linking to Style Sheets
Steal These Style Sheets!
Style Sheets for your use in Library projects
CSS Validation
Ensuring that your Style Sheets are error-free (same as XHTML validation)

A number of valid Style Sheets have been provided for your use. If you wish to create your own Style Sheets, please discuss your requirements with the Branch Library’s Web Coordinator.

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7.3.7. Margins and Inline Elements

So far, we've only talkedabout how margins apply to block-level elements like paragraphs andheaders. Margins can also be applied to inline elements, although theeffects are a little different.

Let's say that you want to set top and bottom margins onboldfaced text. You declare:

B {margin-top: 25px; margin-bottom: 50px;}
specification says only that each number corresponds to a weight atleast as heavy as the number that precedes it. Thus,100, 200,300, and 400 might all map tothe same relatively lightweight variant, while 500and 600 could correspond to the same heavier fontvariant, and 700, 800, and900 could all produce the same very heavy fontvariant. As long as no keyword corresponds to a variant that islighter than the variant assigned to the previous keyword, then <!-- ...or, to put it another way... --><P>bold <SPAN> bold <STRONG> regular <B> regular<STRONG> regular </STRONG></B></STRONG></SPAN>.</P>

Ignoring the fact that this would be entirely counterintuitive, whatwe see in Figure 5-16 is that the main paragraphtext has a weight of 900 and theSPAN aweight of700. When the STRONG text is