@media only screen and (max-width: 560px), only screen and (max-device-width: 560px) {
      .video-youtube{
           width: 100%;
            height: 200px;
         }
    }

    
        
    @media only screen and (min-width : 561px) and (max-width : 1000px) {
       .video-youtube{
           width: 60%;
            height: 300px;
         }
            
    }
     @media only screen and (min-width : 1001px) and (max-width : 2000px) {
         .video-youtube{
            width: 35%;
            height: 300px;
         }
    }