[id^="JqxSortable"] {
    list-style-type: none;
    margin: 2px;
    padding: 5px;
    float: left;
    width: 312px;
    border: lightblue solid 2px;
}

[id^="JqxSortable"] div {
    margin: 1px;
    background-color: lightblue;
    border: DodgerBlue solid 1px;
    padding: 0;
    float: left;
    padding-left: 0;
    text-align: center;
    cursor: pointer;
    font-size: 5.8em;
    width: 100px;
    height: 100px;
}