.pimcore_material_icon_export {
    background: url(../img/icon/export.svg) center center no-repeat !important;
}

.pimcore_material_icon_import {
    background: url(../img/icon/import.svg) center center no-repeat !important;
}

.pimcore_icon_importexport {
    background: url(../img/icon/importexport.svg) center center no-repeat !important;
}