.oi{height:720px}
.ht{height:1051px}
.wv{height:1191px}
.fc{font-family:arial,sans-serif;font-size:30px;color:red;font-weight:bold}
.tb{width:20%;font-family:verdana,sans-serif;font-size:18px;font-weight:bold;background-color:orange;text-align:center}