Wednesday 14th of October 2015 05:56:58 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

to those of you who have been fiddling with lists in HTML. In order to change the type of counter or bullet used for a list's items, you would use the list-style-type.



disc | circle |

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

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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would be bounded by a border.

  • If the ancestor is inline-level, the containing block is set to thecontent edge of the ancestor. In left-to-right languages, the top andleft of the containing block are the top and left content edges ofthe first box in the ancestor, and the bottom and right edges are thebottom and right content edges of the last box. In right-to-leftlanguages, the right edge of the containing block corresponds to the solid are supported, and any other legal values are interpreted as solid, that's enough to be CSS1-compliant. Accordingly, even though Navigator 4.x fails to render dashed and dotted borders, since it does render them as solid, it's not behaving badly.

    Figure 7-35

    Figure 7-35. Using solid to stand in for unrecognized border styles

    You may have noticed that all of the examples in this section had borders of exactly the same width. That's because we properties in a single rule; for example:

    H2 {margin-left: 3em; margin-bottom: 2em; margin-right: 0; margin-top: 0;}

    As we see in Figure 7-15, the margins were set as wewanted them.

    Figure 7-15

    Figure 7-15. More than one single-side margin

    However, in this case, it might have been easier to usemargin after all:

    Similar to rules 4 and 5, this further limits the upward floating of an element by preventing it from being above the top of a line containing content that precedes the floated element. Let's say that, right in the middle of a paragraph, there is a floated image. The highest the top of that image may be placed is the top of the line box from which the image originates. As you can see in Figure 8-35, this keeps images from floating too far upward.

    Figure 8-35

    Figure 8-35. Keeping floats level with their context

    7. A left (or right) floating element that has another