专注前端素材！
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>素材8网教程(study.sucai8.cn)</title> <style> input:checked { background:#ff0000; } </style> </head> <body> <form action=""> <input type="radio" checked="checked" value="male" name="gender" /> Male<br> <input type="radio" value="female" name="gender" /> Female<br> <input type="checkbox" checked="checked" value="Bike" /> I have a bike<br> <input type="checkbox" value="Car" /> I have a car </form> </body> </html>
运行结果