.card-img-top {
    width: 100%;
    height: 15vw;
}

@media only screen and (min-width:1800px) and (max-width:2300px){
    .card-img-top {
        height: 20vw;
    }
}

@media only screen and (max-width:1800px){
    .card-img-top {
        height: 25vw;
    }
}

@media only screen and (max-width:1200px){
    .card-img-top {
        height: 20vw;
    }
}

@media only screen and (max-width:768px){
    .card-img-top{
        height: 35vw;
    }
}

@media only screen and (max-width:576px){
    .card-img-top{
        height: 40vw;
    }
}