body {
    font-family: courier, monospace;
    font-size: 14px;
    font-weight: normal;
    color: #000000;
    text-decoration:none;
    text-align: center;
    margin: 0;
    padding: 0;
}

span { 
    display: table-cell;
    vertical-align: middle;
}

p { 
    height: 100%;
    width: 100%;
    display: table;
}