.modal {
    display: none;
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 11;
}
.modal-content {
    position: relative;
    margin: 80px auto;
    overflow: visible;
    background: none repeat scroll 0 0 #fff;
    -webkit-animation-name: animatetop;
    animation-name: animatetop;
    -webkit-animation-duration: 0.4s;
    animation-duration: 0.4s;
    width: 100%;
    max-width: 855px;
    border-radius: 8px;
}
@media (max-width: 885px) {
    .modal-content {
        margin-left: 15px;
        margin-right: 15px;
        width: calc(100% - 30px);
    }
}
.modal-content iframe {
    display: block;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 8px;
}

@-webkit-keyframes animatetop {
    from {
        top: -300px;
        opacity: 0;
    }
    to {
        top: 0;
        opacity: 1;
    }
}

@keyframes animatetop {
    from {
        top: -300px;
        opacity: 0;
    }
    to {
        top: 0;
        opacity: 1;
    }
}