a,body,button,caption,div,fieldset,form,h1,h2,h3,h4,h5,h6,html,img,input,legend,li,ol,p,span,table,tbody,td,textarea,th,thead,tr,ul{margin:0;padding:0;border:0}*{box-sizing:border-box}ol,ul{list-style:none}body{margin:0}body,button,input,select,textarea{font-family:Arial,sans-serif;font-size:16px}body{background-color:#fff;color:#333}a{color:#007bff;text-decoration:none}:focus{outline:none}