Thursday 19th of October 2017 04:16:44 PM

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

This is allowed in the specification, but it will have absolutely noeffect on the line height, and since margins are effectivelytransparent, this will have no visual effect whatsoever -- as youcan see for yourself in Figure 7-21.

Figure 7-21

Figure 7-21. Margins on an inline element

This happens because margins on inline elements don't changethe line height of an element. (In fact, the only properties that canchange the distance between lines containing only text areline-height, font-size, and

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.

link popularity

font-style

Values

italic | oblique | normal

tags, no HTML tags at all, just plain-and-simple style declarations.These are saved into a plain text file and are usually given anextension of .css, as insheet1.css.

The filename extension is not required, but some browsers won'trecognize the file as containing a style sheet unless it actuallyends with .css, even if youdo include the correct TYPEchange if the parent element's width changes in some way. For example, assume the following, shown in Figure 7-10:

P {margin: 10%;}
<DIV STYLE="width: 200px;">
<P>This paragraph is contained within a DIV which has a width of 200 pixels,
so its margin will be 10% of the width of the paragraph's parent (the DIV).
Given the declared width of 200 pixels, the margin will be 20 pixels on
all sides.</P>
</DIV>