.spinner {
    background: url(images/spinner.gif) no-repeat;
    background-size: 20px 20px;
    display: inline-block;
    visibility: hidden;
    float: right;
    vertical-align: middle;
    opacity: .7;
    width: 20px;
    height: 20px;
    margin: 4px 10px 0;
}

.spinner.is-active {
    visibility: visible;
}
#edd_purchase_receipt_licenses thead {
    background: #e6e6e6;
}
#edd_purchase_receipt_licenses thead th {
    font-weight: bold;
}