@media (max-width: 1023px) {
    .travelevent-list {
        position: relative;
        padding-top: 56.25%;
    }
    .travelevent-list iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }
}
@media (min-width: 1024px) {
    .travelevent-list iframe {
        width : 380px;
        height: 200px;
    }
}