.hover-zoom {
  -webkit-transition: all 0.3s ease-in-out;
  transition: all 0.3s ease-in-out;
  background-size: 100%;
  background-position: center;
  background-repeat: repeat;
  background-color: gray;
  position: relative;
  cursor: pointer;															/* de pointer heb ik precies hetzelfde als jou er in gezet en het werkt*/
}
.hover-zoom:hover {
  background-size: 120%;
}

.hoverBig-zoom {
  -webkit-transition: all 0.3s ease-in-out;
  transition: all 0.3s ease-in-out;
  background-size: 100%;
  background-position: center;
  background-repeat: repeat;
  background-color: gray;
  position: relative;
  
}
.hoverBig-zoom:hover {
  background-size: 120%;
}

.hoverPort-zoom {
  -webkit-transition: all 0.3s ease-in-out;
  transition: all 0.3s ease-in-out;
  background-size: 100%;
  background-position: center;
  background-repeat: repeat;
  background-color: gray;
  position: relative;

}
.hoverPort-zoom:hover {
  background-size: 120%;
}