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背景固定：　<style type=text/css> <!-- body{ background-image:url(圖址); background-attachment:fixed;} --> </style>	背景置中：　<style type="text/css"> <!-- body { background-color: 圖片底色; background-image : url(圖址); background-repeat: no-repeat; background-attachment: fixed; background-position: center ; } --> </style>
背景左下：　<style type=text/css> <!-- BODY{ background-color : 圖片底色; background-image : url(圖址); background-position : 0% 100%; background-repeat:no-repeat; background-attachment : fixed;} --> </style>	背景右下：　<style type=text/css> <!-- BODY{ background-color : 圖片底色; background-image : url(圖址); background-position : 100% 100%; background-repeat:no-repeat; background-attachment : fixed;} --> </style>