<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "../../../www.w3.org/TR/xhtml1/DTD/strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-CN"> <head> <title>自由伸展的三欄式版面</title> <meta name="Big John" content="August 24, 2002" /> <meta http-equiv="content-Type" content="text/html; charset=GB2312" /> <meta name="mssmarttagspreventparsing" content="true" /> <meta name="keywords" content="demo,test,big john,big,john,positioniseverything,css,html,what else do you want from me!?" /> <meta name="description" content="A demo of 3 fluid, full height columns, including header and footer, all with different BGs. " /> <meta name="distribution" content="global" /> <meta name="resource-type" content="document" /> <meta name="robots" content="all" /> <meta http-equiv="imagetoolbar" content="no" /> <meta http-equiv="pragma" content="no-cache" /> <style type="text/css"> <!-- html {margin: 0; padding: 0;} body {margin: 0; padding: 0; font-family: "Palatino Linotype", Georgia, "Times New Roman", Times, serif; font-size: small; background: #ee8 repeat-y url(images/browncol.gif);} /*** Image is 180px wide, and 20px high ***/ pre {margin: 0; font-family: verdana, sans-serif; font-size: .9em;} a {color: #000;} .alignright {margin-top: 0; text-align: right;} .small {font-size: .9em;} .return {position: absolute; top: 0; right: 0; text-align: right; padding: .5em;} /******************************************************************************* Positioning rules *******************************************************************************/ h1, h2 { font-size: 22px; margin: 0; color: #040; background-color: #c83; /*** The header and footer have backgrounds, to cover the 2-tone body BG ***/ border-top: 4px solid #000; border-bottom: 5px solid #000; padding: 3px 0 3px 1em; } h2 {background-color: #638; color: #fff;} div#leftbox { /*** No side padding or borders, to avoid the IE5.x box model problem ***/ position: absolute; left: 10px; width: 150px; color: #ee8; padding-top: 10px; } #middlebox { margin: 0 34% 0 170px; border-left: 3px solid #000; border-right: 3px solid #000; padding: 10px; background-color: #dda; /*** This div has a background to cover the 2-tone body BG ***/ } div#rightbox { /*** No side padding or borders, to avoid the IE5.x box model problem ***/ position: absolute; right: 25px; /*** IE5/mac will show a horizontal scrollbar if this is less than 16px, or other units are used http://www.l-c-n.com/IE5tests/right_pos/ ***/ width: 30%; color: #820; padding-top: 10px; } --> </style> </head> <body> <h1> 自由伸展的三欄式版面（Three Column Stretch）（頁首） </h1> <div id="leftbox"> <pre> <strong>#leftbox</strong> { position: absolute; left: 10px; width: 180px(150px?); } </pre> <p> <strong>這個欄段</strong>的背景是利用 body 卷標設定的圖片，以垂直方向重複貼上所產生的。圖片的寬度和中間欄段的左邊界(margin)相等，高度為20px，這樣可以減少圖片重複的次數，加快演算上色的速度。 <p> </p> 這一欄的內容(#leftbox)以絕對位置(absolutely positioned)的方式放在左邊的地區。另外因為底層背景圖片的尺寸限制，需要給定一個以像素作單位的"寬度(width)"值。 </p> <p> <a href="#"><strong>測試用連結</strong></a> </p> </div> <div id="rightbox"> <pre> <strong>#rightbox</strong> { position: absolute; right: 2%; width: 30%; } </pre> <p> <strong>這個欄段</strong>也能顯示"body"的背景，但是因為"body"的背景 圖片只在垂直方向重複，而且僅與中間欄段的左邊界同寬，所以這邊顯示的是"body"的背景顏色(background-color)。 這個欄段的"寬度(width)"和右邊界的地區是用百分比作單位，你想用其它單位也可以。 </p> <p> 如果頁面比 640px 還窄，中間和右側邊欄段使用的"pre"卷標會導致內容重疊。 </p> <p> <a href="#"><strong>測試用連結</strong></a> </p> </div> <div id="middlebox"> <div> <a href="index.html"><strong>返回 p.i.e.</strong></a> </div> <pre> <strong>#middlebox</strong> { margin: 0 34% 0 170px; border-left: 2px solid #000; border-right: 2px solid #000; padding: 0 10px 10px; background-color: #6b9; } </pre> <p> <strong>中間欄段</strong>有設定背景色，以便跟右側邊欄段作區分。 這個欄段也需要補白(padding)和邊框(border)，不過因為沒有設定"寬度(width)"屬性，並不會觸發 IE5.x 的區塊模組(box model)問題。 </p> <p> 這個欄段也必須是最長的欄段，並且用你支援的最大解析度(resolution)瀏覽時，仍要能夠延伸到檢視區(viewport)底端下方，否則"body"的背景就會在頁尾(footer)下方出現。 </p> <p> <strong>這整個範例</strong>沒有在任何欄段裡宣告"高度(height)"屬性，這是為了避掉一些瀏覽器表現"高度(height)"屬性的獨特方式。 因為這些條件的限制，這個版面非常適合那些總是有很長的中間欄段的網頁，像是 weblogs。 </p> <p> 頁首、頁尾和中間欄段是"固定的(static)"（或說"相對的(relative)"），而這三者一起定義了網頁的尺寸。你可以幫頁首和頁尾指定"高度(height)"。 </p> <p> 在原始檔案裡，以絕對位置表示的 div#rightbox 放置在 div#leftbox 之後， 因此這些 div 的"top"屬性可以忽略。 這會讓它們待在它們該在的垂直方向起點，也就是說它們是固定的（直接連在固定的頁首下）。 所以如果頁首因為額外的內容擴大，三個欄段都會往下調整，這樣不是很棒嗎？ </p> <p> <strong>Mozilla 中</strong>，因為垂直方向的舍入誤差(rounding error)，在某些解析度裡，頁尾下方可能有 1px 的空隙， <a href="mozshift.html">這個範例</a>描述得更詳細。 </p> <p> <strong>Nav4 中</strong>沒辦法使用像"div#leftbox"這類文法，所以請用"#leftbox"來代替。我的寫法只是為了要明確地表示。 </p> <p> <strong>致謝：</strong>再次感謝<a href="../../../www.l-c-n.com/default.htm">Philippe Wittenbergh</a> ，因為他的幫忙，讓這個範例更為完善。<strong>更感謝</strong> <a href="../../../www.mark.ac/help/default.htm">Mark Howells</a> ，因為他提供了最初的 body 背景點子。 </p> <p class="small alignright"> <a href="../../../users.rraz.net/mc_on_the_rocks/default.htm" title=" My mountain bike site "><strong>Big John</strong></a> <a href="mailto:johnthebig66@yahoo.com" title="If you've found something new and interesting to say about any CSS subject, please contact me. I want to know! ">e-mail</a> positioniseverything 最後更新日期： September 6, 2002 Created August 24, 2002 </p> <p class="small alignright"> <a href="../../../ccca.nctu.edu.tw/~hlb/trans/pie/thr.col.stretch.html" title="">繁體中文翻譯：</a><strong>yyhuang</strong> 簡體中文轉換: <a href="../../../www.onestab.net/default.htm"><strong>onestab</strong></a> <p> <strong>以下是填滿欄段用的</strong> Why don't cannibals eat clowns? Answer: They taste funny. What is the difference between a lousy golfer and a lousy skydiver? Answer: A lousy golfer goes WHAP! "Oh crap!". A lousy skydiver goes "Oh crap!" WHAP! Did you hear about the geneticist that tried to cross a potato and a chicken? He wanted to produce a chicken that would definitely NOT cross the road, but instead, got a bunch of potatoes that sat around pecking eachother's eyes out. How many Psychiatrists does it take to change a light bulb? Answer: Only one, but the bulb has to really <em>want</em> to change. Why did the egg cross the road? Answer: It had an inclination. </p> </div> <h2> 自由伸展的三欄式版面（Three Column Stretch）（頁尾） </h2> </body> </html>
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