/* video#preview {
  width: 400px;
  margin-left: auto;
  margin-right: auto;
} */

.d-flex{
  display: flex;
}
.justify-content-center{
  justify-content: center;
}

.btn-group{
  padding: 0.5rem 4rem;
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
  video#preview {
      padding: 0 4rem;
      padding-top: 0 !important;
      width: 480px;
      margin-left: auto;
      margin-right: auto;
  }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
  video#preview {
      padding: 0 5rem;
      width: 400px;
      margin-left: auto;
      margin-right: auto;
  }
}

@media (min-width: 768px) and (max-width: 991.98px) {
  video#preview {
    padding: 0 5rem;
    width: 624px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (min-width: 576px) and (max-width: 767.98px) {
  video#preview {
    width: 520px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 575.98px) {
  video#preview {
    width: 332px;
    margin-left: auto;
    margin-right: auto;
  }
}