是选择
body { font-family:"宋体", arial;margin:0; padding:0; background: #FFF; font-size:12px; color:#000;}
div,form,img,ul,ol,li,dl,dt,dd {margin: 0; padding: 0; border: 0; }
h1,h2,h3,h4,h5,h6 { margin:0; padding:0;font-size:12px; font-weight:normal;}
还是选择*{margin:0;padding;}
进行定义呢?