background-origin · CSS基礎

## background-origin屬性 background-Origin屬性指定background-position屬性應該是相對位置。 **注意**如果背景圖像background-attachment是"固定"，這個屬性沒有任何效果。 JavaScript 語法:object object.style.backgroundOrigin="content-box" 語法 ~~~ background-origin: padding-box|border-box|content-box; ~~~ | 值 | 描述 | | :-- | :-- | | padding-box | 背景圖像填充框的相對位置 | | border-box | 背景圖像邊界框的相對位置 | | content-box | 背景圖像的相對位置的內容框 | 實例 ``` <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>W3Cschool教程(w3cschool.cn)</title> <style> div { border:1px solid black; padding:35px; background-image:url('/statics/images/course/smiley.gif'); background-repeat:no-repeat; background-position:left; } #div1 { background-origin:border-box; } #div2 { background-origin:content-box; } </style> </head> <body> <p>background-origin:border-box:</p> <div id="div1"> Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. </div> <p>background-origin:content-box:</p> <div id="div2"> Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. </div> </body> </html> ```