*{box-sizing:border-box}body{margin:0;background:#fafafa;color:#1a1a1a}a{color:#1a5}button,input{padding:8px;font-size:15px;border-radius:6px;border:1px solid #ccc}button{background:#1a5;color:#fff;border:none;cursor:pointer}button:disabled{opacity:.6;cursor:default}