.embed-responsive.embed-responsive-4by3 {
    padding-bottom: 1450px;
}

.mt-5 {
    margin-top: 0px;
}

@media (min-width: 560px) {

    .embed-responsive.embed-responsive-4by3 {
        padding-bottom: 1450px;
    }

    .mt-5 {
        margin-top: 0 !important;
    }
}

@media (min-width: 768px) {
    .embed-responsive.embed-responsive-4by3 {
        padding-bottom: 1300px;
    }

    .mt-5 {
        margin-top: 3rem !important;
    }
}

@media (min-width: 992px) {

    .embed-responsive.embed-responsive-4by3 {
        padding-bottom: 950px;
    }
}

@media (min-width: 1020px) {

    .embed-responsive.embed-responsive-4by3 {
        padding-bottom: 850px;
    }
}

@media (min-width: 1380px) {
    .embed-responsive.embed-responsive-4by3 {
        padding-bottom: 805px;
    }
}