{"css":"","js":"","html":"\n\n \n \n <style type="text/css">\n * {\n margin: 0;\n padding: 0;\n }\n .content-box\n {\n width:80px;\n height:80px;\n padding:5px;\n border:5px solid black;\n }\n \n \n \n <div class="content-box">\n \n","libs":[]} padding:内边距