1 背景相关
背景颜色 background-color = 颜色名称/rgb值/十六进制值
背景图片 background-image = url('')
背景图片平铺方式 background-repeat = repeat-x(仅水平平铺) repeat-y(仅垂直平铺) no-repeat(不平铺)
设置背景图片位置 background-position = 数字+单位/center/top/bottom/left/right 同上。 例如:50px 50px
背景图片是否滚动 background-attachment = fixed(不滚动) scroll(滚动)
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>first page</title> <style> body{ background-color: aliceblue; background-image: url('l.jpg'); background-repeat: no-repeat; background-position: right top; background-attachment: fixed; } </style> </head> <body> <h1 >hello world</h1> <p >this paragra is only used for test</p> <br> <p>hello world</p> <p>hello world</p><p>hello world</p><p>hello world</p><p>hello world</p><p>hello world</p> <p>hello world</p><p>hello world</p><p>hello world</p><p>hello world</p><p>hello world</p> <p>hello world</p><p>hello world</p><p>hello world</p><p>hello world</p><p>hello world</p> <p>hello world</p><p>hello world</p><p>hello world</p><p>hello world</p><p>hello world</p> <p>hello world</p><p>hello world</p><p>hello world</p><p>hello world</p> </body> </html>