video{
    height: auto;
}
.video-border{
    border-radius: 0 0 15px 15px;
}


@media screen and (max-width:350px) {
    
    .video-border2 {
        border-radius: 50px;
    }
}

@media screen and (min-width:351px) {
    
    .video-border2 {
        border-radius: 90px;
    }
}