.responsive {
    width: 100%;
    height: auto;
    
  }
.w3-row-padding{
  font-display: center;

}
  .w3-card-4{
    border-radius: 30px;
    padding-bottom: 50px;
    font-display: center;

  }
  .video {
    width: 100%;
    height: auto;
    
  }

  .w3-btn{
  border-radius: 30px
}