這在很多網站都常見,比如說美麗說,還有本博,css實現div懸浮不動效果很簡單,就如本站所示,實現css代碼如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>CSS固定定位</title><style type="text/css">{padding:0;margin:0;}div{width:100%;line-height:30px;background: red;border:1px solid #F90;position:fixed;top:0px;left:0px;}</style><!--[if lte IE 6]><style type="text/css">html {height:100%;overflow:hidden;}body {height:100%;overflow:auto;}div{position:absolute;}</style><![endif]--></head><body><div id="fixedLayer">固定不動</div><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p><p>php教程</p></body></html>
要考慮到IE6不相容問題即可!