.col-md-3.ejercicio-box {
    padding: 0;
}

.labelNumber {
    font-weight: bold;
    font-size: 10pt;
    background-color: #9B9EA2;
    text-align: center;
    color: white;
    height: 24px;
    line-height: 24px;
}

.action-buttons .btn {
    width: 22px;
    height: 22px;
    padding: 2px;
    font-size: 12px;
}

@media (max-width: 400px) {
    video#myVideo {
        max-height: 400px;
        max-width: 100%;
    }
}



@media screen and (orientation:landscape) {
    video#myVideo {
        
            max-height: 190px;
            max-width: 100%;
        
    }
}