table.matrix {
    border-collapse: separate;
}

table.matrix td {
    font-size: 10px;
    font-family: "Ubuntu Mono",monospace;
    width:30px;
    height:30px;
    text-align: right;
    padding-right:4px;
    position: relative;
    top:0px;
    left:0px;
    overflow: hidden;

    border-width:1px;
    border-style: solid;
    border-color:rgb(239,239,248);
    border-radius: 1px;
}

table.matrix th {
    font-size:10px;
    padding:5px;
    background-color:rgb(239,239,248);
}

table.matrix thead th {
    width:30px;
    height:60px;
    position: relative;
}

table.matrix tbody th {
    text-align: right;
    white-space: nowrap;
}

table.matrix thead th span {
    position: absolute;
    width: 30px;
    height: 23px;

    transform: rotate(-90deg);
    -moz-transform: rotate(-90deg);
    -webkit-transform: rotate(-90deg);
}