geopf-extensions-openlayers/src/packages/CSS/Controls/OverviewMap/DSFRoverviewMapStyle.css

French Geoportal Extensions for OpenLayers libraries

.gpf-btn-icon-overviewmap::after {
    -webkit-mask: url('data:image/svg+xml;base64,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') center no-repeat;
    mask: url('data:image/svg+xml;base64,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') center no-repeat;
}

.ol-overviewmap:has(> .gpf-btn-icon[aria-pressed="true"])::after {
    transform: translateY(-100%);
}

.ol-overviewmap:not(.ol-collapsed) {
    background: unset;
}