Tag / css2

  • April 15, 2009 - Rajesh Odayanchal

    Selector syntax

    A simple selector is either a type selector or universal selector followed immediately by zero or more attribute selectors, ID selectors, or pseudo-classes, in any order. The simple selector matches if all of its components match. A selector is a chain of one or more simple selectors separated by combinators. Combinators are: whitespace, “>”, and […]

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  • July 7, 2008 - Rajesh Odayanchal

    The Complete CSS-2 Specification

    You can get a complete Specification of CS 2 from here. Just Click on the following Link.Cascading Style Sheets, level 2

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  • April 15, 2008 - Rajesh Odayanchal

    Grouping

    When several selectors share the same declarations, they may be grouped into a comma-separated list. Example(s): In this example, we condense three rules with identical declarations into one. Thus, H1 { font-family: sans-serif }H2 { font-family: sans-serif }H3 { font-family: sans-serif } is equivalent to: H1, H2, H3 { font-family: sans-serif } CSS offers other […]

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  • - Rajesh Odayanchal

    Boxtest

    Boxtest Here is a sample div with class “boxtest”. It has 20px border, 30px padding, and 300px width. div.boxtest { border:20px solid; padding:30px; background: #ffc; width:300px;} The total width including borders and padding should be 400px. 20+30+300+30+20 = 400 User agents which misinterpret the CSS1 box model by placing border and padding inside the specified […]

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April 22, 1970: The first Earth Day

Posted on Sunday April 22, 2018 - This Day in World History

Earth Day, an event to increase public awareness of the world’s environmental problems, is celebrated in the United States for the first time. Millions of Americans, including students from thousands of colleges and universities, participated in rallies, marches, and educational programs.

Earth Day was the brainchild of Senator Gaylord Nelson of Wisconsin, a staunch environmentalist who hoped to provide unity to the grassroots environmental movement and increase ecological awareness. “The objective was to get a nationwide demonstration of concern for the environment so large that it would shake the political establishment out of its lethargy,” Senator Nelson said, “and, finally, force this issue permanently onto the national political agenda.” Earth Day indeed increased environmental awareness in America, and in July of that year the Environmental Protection Agency was established by special executive order to regulate and enforce national pollution legislation.

On April 22, 1990, the 20th anniversary of Earth Day, more than 200 million people in 141 countries participated in Earth Day celebrations.

Earth Day has been celebrated on different days by different groups internationally. The United Nations officially celebrates it on the vernal equinox, which usually occurs about March 21.