:root{color:#000;background-color:#efefef}body{margin:0;padding:20px;font-family:MS Pゴシック,MS PGothic,Osaka,ヒラギノ角ゴ Pro W3,sans-serif;line-height:1.2}a{color:#00f;text-decoration:underline}a:hover{color:red}button,input{border:1px solid #767676;font-family:inherit;font-size:12px}button{cursor:pointer;background-color:#efefef;padding:2px 10px}button:active{border-style:inset}input[type=text]{background-color:#fff;padding:2px}