Difference between revisions of "Cascade Style Sheets"

Latest revision as of 17:54, 22 September 2018

Cascade Style Sheets (CSS)

A CSS is made up of two parts: the selector and declaration. The selector states which tag the rule applies. The declaration stats what happens when the rule is applied.

The declaration is made up of two elements: a property and value. A declaration must end with a semicolon.

Multiple declarations can be contained in a single rule.

Multiple selectors can be contained in a single rule. A comma must be used after each selector except the last.

h1, h2, h3 {color:red; font-weight:bold;}

Multiple rules can be applied to the same selector.

h1, h2, h3 {color:red; font-weight:bold;}

h3 {font-style:italic;}

Selectors

Adding Styles to Web pages

Psuedo Elements and Classes

Cascade and Rule Declarations

Styling Fonts and Text

Positioning Elements aka The Box

Positioning Elements

Basic Page Layout

Tips creating styles

To eliminate the difference between user agents always zero out margins and padding on all elements.

Example:

* {margin:0; padding:0;}

Helpful links

Cascading Style Sheets home page

Cascading Style Sheets Current Work

Cascading Style Sheets Level 2 Revision 1 (CSS 2.1) Specification

Cascading Style Sheets, level 2 CSS2 Specification

Cascading Style Sheets, level 1 CSS1 Specification

CSS Menu Maker

Interesting CSS resources

SVG on the Web A Practical Guide

Viewport Units vm vh vmin vmax

Animate SVGs with CSS blog led me to Animate SVG with CSS

Back to Web Development

@@ Line 1: / Line 1: @@
-Cascade Style Sheets (CSS)
+== Cascade Style Sheets (CSS) ==
 A CSS is made up of two parts: the selector and declaration. The selector states which tag the rule applies. The declaration stats what happens when the rule is applied.
@@ Line 17: / Line 17: @@
 h3 {font-style:italic;}</pre>
-== Contextual Selectors ==
+== Selectors ==
-Contextual selectors use more than one tag in the selector. The tag closest to the declaration is the targeted tag. The additional tag(s) state where the target tag must be located in the markup up in order for target tag to be affected. Contextual selectors have spaces between them.
-=== Contextual selector examples ===
+[[Selectors]]
-<pre><html>
-<head>
-	<title>Contextual Selector Example 1</title>
-	<link href="style_sheets/contextual_selector_example_1.css" rel="stylesheet" type="text/css">
-</head>
-<body>
-== Adding Classes & IDs ==
+== Adding Styles to Web pages ==
-Adding classes & IDs to the tags in XHTML enables you to style without regard to document hierarchy.
+[[Adding Styles to Web pages]]
-=== Simple Use of Class ===
+== Psuedo Elements and Classes ==
-Simple use of a class p42.
+[[Psuedo Elements and Classes]]
-CSS contents:
+== Cascade and Rule Declarations ==
-<pre>
-p { font-family: Helvetica, sans-serif; }
-.specialtext {font-weight:bold; }
-</pre>
-[http://www.gotopinion.info/styles/simple_use_example.html Simple Use Example]
+[[Cascade and Rule Declarations]]
-=== Contextual Class Selectors ===
+== Styling Fonts and Text ==
-You can combine tag and class name to make a selector more specific.
+[[Styling Fonts and Text]]
-<pre>
+== Positioning Elements aka ''The Box'' ==
-p { font-family: Helvetica, sans-serif; }
-.specialtext { font-weight:bold; }
-p.specialtext { color:red}
-</pre>
-[http://www.gotopinion.info/styles/class_selector_example_0.html | Class Selector Example 0]
+[[Positioning Elements]]
-You can further specify by adding more tags.
+== Basic Page Layout ==
-<pre>
+[[Basic Page Layout]]
-p { font-family: Helvetica, sans-serif; }
-.specialtext { font-weight:bold; }
-p.specialtext { color:red}
-p.specialtext span { font-style:italic; }
-</pre>
-[http://www.gotopinion.info/styles/class_selector_example_1.html | Class Selector Example 1]
+== Tips creating styles ==
+To eliminate the difference between user agents always zero out margins and padding on all elements.
+Example:
+<pre>* {margin:0; padding:0;}</pre>
+== Helpful links ==
+[http://www.w3.org/Style/CSS/ Cascading Style Sheets home page]
+[http://www.w3.org/Style/CSS/current-work Cascading Style Sheets Current Work]
+[http://www.w3.org/TR/CSS21/ Cascading Style Sheets Level 2 Revision 1 (CSS 2.1) Specification]
+[http://www.w3.org/TR/REC-CSS2/ Cascading Style Sheets, level 2 CSS2 Specification]
+[http://www.w3.org/TR/REC-CSS1 Cascading Style Sheets, level 1 CSS1 Specification]
+[http://www.cssmenumaker.com/ CSS Menu Maker]
+== Interesting CSS resources ==
+[https://svgontheweb.com/ SVG on the Web] A Practical Guide
+[https://web-design-weekly.com/2014/11/18/viewport-units-vw-vh-vmin-vmax/ Viewport Units vm vh vmin vmax]
+[https://medium.com/@aniboaz/animate-svg-4fa7dd00e860 Animate SVGs with CSS] blog led me to [https://jonsuh.com/blog/animate-svg-with-css/ Animate SVG with CSS]
 <center>[[web development|Back to Web Development]]</center>