.x-menu-check-item {
    background-position: right center;
    background-repeat: no-repeat;
}

.infoBox { /* The containing div for infoBox popups */
    border: 1px solid #99c;
    background: #eef;
    opacity: 0.95;
    padding: 6px;
    width: 240px;
    font-size: .9em;
}