Bootstrap/docs/5.3/examples/grid/grid.css

.themed-grid-col {
  padding-top: .75rem;
  padding-bottom: .75rem;
  background-color: rgba(112.520718, 44.062154, 249.437846, .15);
  border: 1px solid rgba(112.520718, 44.062154, 249.437846, .3);
}

.themed-container {
  padding: .75rem;
  margin-bottom: 1.5rem;
  background-color: rgba(112.520718, 44.062154, 249.437846, .15);
  border: 1px solid rgba(112.520718, 44.062154, 249.437846, .3);
}