{"html":"<!DOCTYPE html>\n<html>\n\n<head>\n    <meta charset=\"UTF-8\">\n    <style>\n       /* 填写样式 */\n       .li2,.li4{\n    background-color:rgb(255, 0, 0)\n}\n    </style>\n</head>\n\n<body>\n    <ul>\n    <li>1</li>\n    <li class=\"li2\">2</li>\n    <li>3</li>\n    <li class=\"li4\">4</li>\n</ul>\n    <script type=\"text/javascript\">\n        /* 填写JavaScript */\n        \n    </script>\n</body>\n\n</html>","css":"","js":""}