Splunk_Docker/files/splunk-etc/apps/search/appserver/static/dashboard.css

.SingleValueHolder {
    background-image: none;
    -moz-box-shadow: none;
}

#SingleValue_0_1_0 .SingleValueHolder {
    background: none;
    text-align: left;
    font-weight: normal;
    width: auto;
    padding-top: 0;
    padding-left: 0;
    font-size: 14px;
    -moz-box-shadow: none;
}