{"css":" div{\n                border:1px black solid;\n                width:100px;\n                height:100px;\n            }\n","js":"","html":"<html>\n    <head>\n        <meta charset=utf-8>\n        <style type=\"text/css\">\n            /*补全代码*/\n            div{\n                width:100px;\n                height:100px;\n                border:1px black solid;\n                border-radius:50px;\n            }\n        </style>\n    </head>\n    <body>\n        <div></div>\n    </body>\n</html>","libs":[]}

设置一个盒子在里面画圆