Predefinição:Teste/styles.css

.map-wrapper {
  position: relative;
  display: inline-block;
}

.map-wrapper img {
  display: block;
  width: 100%;
  height: auto;
}

.map-point {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(255, 0, 0, 0.8);
  cursor: pointer;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 2px #000;
}

.map-point .tooltip {
  display: none;
  position: absolute;
  bottom: 120%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  z-index: 10;
}

.map-point:hover .tooltip {
  display: block;
}