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      • css教程之CSS概述

      • 2015-01-21 22:44 來源:未知
      CSS概述(相關css教程
       一、認識CSS:CSS就是Cascading Style Sheets,中文翻譯為“層疊樣式表”,簡稱樣式表,它是一種制作網頁的新技術。
          網頁設計最初是用HTML標記來定義頁面文檔及格式,例如標題<h1>、段落<p>、表格<table>、鏈接<a>等,但這些標記不能滿足更多的文檔樣式需求,為了解決這個問題,在1997年W3C(The World Wide Web Consortium)頒布HTML4標準的同時也公布了有關樣式表的第一個標準CSS1, 自CSS1的版本之后,又在1998年5月發布了CSS2版本,樣式表得到了更多的充實。W3C把DHTML(Dynamic HTML)分為三個部分來實現:腳本語言(包括JavaScript、Vbscript等)、支持動態效果的瀏覽器(包括Internet       Explorer、Netscape Navigator等)和CSS樣式表。你可以用CSS精確的控制頁面里每一個元素的字體樣式、背景、排列方式、區域尺寸、四周加入邊框等。使用CSS能夠簡化網頁的格式代碼,加快下載顯示的速度,外部鏈接樣式可以同時定義多個頁面,大大減少了重復勞動的工作量。 注意:CSS需要IE4(Internet Explorer 4.0)和NC4(Netscape4.0)以上的瀏覽器支持,有些效果需要更高版本的瀏覽器支持。
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