#main{text-align:center;height:100%;overflow:hidden}table{margin:0 auto}td{border:10px solid #fff}.text{font-size:20px}.color{width:150px;font-size:15px;height:20px}.convert{display:inline-block;width:150px;height:40px;border-width:0;border-radius:3px;background:#1e90ff;cursor:pointer;outline:0;color:#fff;font-size:17px;margin:0 auto;margin-bottom:20px;margin-left:20px}@media screen and (max-width:665px){body{width:90%}}