#main_icon{
    background-image: url(../img/topic1.png);
    background-position: center center;
    background-repeat: no-repeat;
}

table{
    position: relative;
    margin: auto;
    padding: 0;
    border-collapse: collapse;
    width: 90%;
}

th, td{
    border: 1px solid #000;
    padding: 4px;
    text-align: center;
}

td{ vertical-align: text-top; }
th{ color: #117cb4; }