img {
  width: 100%;
  height: 100vh;
  margin: 0;
}

body {
  margin: 0;
  background-color: black;
  position: relative;
}

.clickable-zone1 {
    position: absolute;
    top: 25%;
    width: 25%;
    height: 60%;
    cursor: pointer;
    z-index: 10;
}

.clickable-zone2 {
    position: absolute;
    top: 55%;
    left: 30%;
    width: 40%;
    height: 40%;
    cursor: pointer;
    z-index: 10;
}

.clickable-zone3 {
    position: absolute;
    top: 25%;
    left: 75%;
    width: 30%;
    height: 60%;
    cursor: pointer;
    z-index: 10;
}