.kontejner-karta{
  margin: 50px 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.karta{
  width: 1200px;
  height: 900px;
  transition: 0.3s;
}

@media(width < 1250px){
  .karta{
    width: 800px;
    height: 600px;
  } 
}

@media(width < 850px){
  .karta{
    width: 600px;
    height: 500px;
  } 
}

@media(width < 650px){
  .karta{
    width: 400px;
    height: 300px;
  } 
}

@media(width < 450px){
  .karta{
    width: 300px;
    height: 300px;
  } 
}