.cent {
    text-align: center;
}
.rt {
    text-align: right;
}
.main {
    position : relative;
    top:80px;
    color:skyblue;
    background-color: blue;
    border: solid 2px blue;
    font-family: "Century Schoolbook",serif;
    font-size: 12pt;
    padding: 12px;
}
.footer {
    position: fixed;
    bottom: 10px;
    right: 10px;
    color : rosybrown;
    background-color: palegreen;
    border: solid 3px wheat;
    padding:6px;
    max-width:600px;
    font-size: 14pt;
    font-family : verdana,sans-serif;
}
th,td {
    background-color:navy;
    color:skyblue;
    border: 2px solid tomato;
}
table {
    border-collapse:collapse;
}