.stvar {
height: 330px;
}

.opis {
  text-align: center;
  font-weight: bold;
  color: #333;
  text-decoration: none;

}

.slika {
  width: 330px;
}

.zum {
  overflow: hidden;
  width: 360px;
}

.zum {
  width: 360px;  
  -moz-transition: all 0.3s;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
.zum:hover {
  -moz-transform: scale(1.1);
  -webkit-transform: scale(1.1);
  transform: scale(1.1);
}