Part-DB.Part-DB-server/assets/css/selectpicker_extensions.css

/***********************************************
 * Special level whitespace characters that only show up when inside a bootstrap-select dropdown
 ***********************************************/
.dropdown-item span.picker-level::after {
    content: "\00a0\00a0\00a0"; /* 3 spaces */
}

/** Bootstrap-select Hide on Selected element */
.picker-hs {
    display: none;
}
.dropdown-item .picker-hs {
    display: inherit;
}

/** Bootstrap-select Unhide on selected element */
.picker-us {
    display: inherit;
}
.dropdown-item .picker-us {
    display: none;
}