W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
运行代码
<html> <head> <style type="text/css"> body { background-color:#FFCC80; background-image:url(/i/eg_bg_desert.jpg); } </style> <script type="text/javascript"> function changeRepeat() { document.body.style.backgroundRepeat="repeat-y"; } </script> </head> <body> <input type="button" onclick="changeRepeat()" value="Repeat background-image only on the y-axis" /> </body> </html>