source: OpenRLabs-Git/deploy/rlabs-docker/web2py-rlabs/applications/admin/static/css/jqueryMultiSelect.css

.multiSelect {
        width: 200px;
        border: solid 1px #BBB;
        background: #FFF right center no-repeat;
        padding: 2px 4px;
        padding-right: 20px;
        display: inline;
}

.multiSelect.hover {
        background: right center no-repeat;
}

.multiSelect.active,
.multiSelect.focus {
        border: inset 1px #000;
}

.multiSelect.active {
        background: right center no-repeat;
}

.multiSelectOptions {
        width: 500px;
        max-height: 150px;
        margin-top: -1px;
        overflow: auto;
        border: solid 1px #B2B2B2;
        background: #FFF;
}

.multiSelectOptions LABEL {
        padding: 2px 5px;
        display: block;
}

.multiSelectOptions LABEL.checked {
        background: #E6E6E6;
}

.multiSelectOptions LABEL.selectAll {
        border-bottom: dotted 1px #CCC;
}

.multiSelectOptions LABEL.hover {
        background: #CFCFCF;
}