MOST IMPORTANT RULES OF CSS (STRUCTURE AND FORMATTING)

Css 3.0

Structure and Formatting of a CSS Rule

Most important rule of css - The structure and rules of Cascading Style Sheets, including an introduction to the various ... The above example has created two classes, css and html for use with HTML's CODE element.

Property Lists

Some properties can take multiple values, collectively known as a property list.

/*  Two  VALUES  in  THIS  property  LIST  */
span {
 text-shadow: yellow 0 0 3px, green 4px 4px 10px;
}

/* Alternate Formatting */
span {
 text-shadow:
 yellow 0 0 3px, green 4px 4px 10px;
}

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Multiple Selectors

When you group CSS selectors, you apply the same styles to several different elements without repeating the styles in your style sheet. Use a comma to separate multiple grouped selectors.

div, p { color: blue }

So the blue color applies to all <div> elements and all <p> elements. Without the comma only <p> elements that are a child of a <div> would be red.

This also applies to all types of selectors.

p, .blue, #first, div span{ color : blue }

This rule applies to:

• <p>
• elements of the blue class
• element with the ID first every
• <span> inside of a <div>

Rules, Selectors, and Declaration Blocks

A CSS rule consists of a selector (e.g. h1) and declaration block ({}).

h1 {}