geopf-extensions-openlayers/src/packages/CSS/Controls/Measures/DSFRmeasureToolTipStyle.css

French Geoportal Extensions for OpenLayers libraries

/* MEASURE TOOL */

.GPmeasureTooltip {
  background-color: var(--background-contrast-grey);
  padding: 0.2rem 0.4rem;
  opacity: 0.8;
}