.arcgis-overview-map {
  position: relative;
  width: 520px;
  height: clamp(420px, 70vh, 900px) !important;
  min-height: 420px;
  font-family: "Open Sans", Helvetica, Arial, sans-serif;
}

.arcgis-overview-map * { box-sizing: border-box; }

/* Main view fills the block */
.arcgis-overview-map .main-viewdiv { position: absolute; inset: 0; }

/* Overview inset, upper-right */
.arcgis-overview-map .overview-viewdiv {
  position: absolute;
  top: 15px;
  right: 15px;
  z-index: 10;
  width: 180px;
  height: 180px;
  border: 2px solid #fff;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  background: rgba(27, 29, 29, 0.78);
}

.arcgis-overview-map .overview-viewdiv .esri-attribution {
  display: none !important;
}