.class-test-denner{

color: red;
}

.row_fecam{
  display: inline-flex;

}

.row_fecam {
  --bs-gutter-x: 1.5rem;
  --bs-gutter-y: 0;
  width: 100%;
  display: flex;
  flex-wrap: wrap;
}

.row_fecam > * {
  flex-shrink: 0;
  width: 100%;
  max-width: 100%;
  padding-right: calc(var(--bs-gutter-x) * 0.5);
  padding-left: calc(var(--bs-gutter-x) * 0.5);
  margin-top: var(--bs-gutter-y);
}

.col_fecam {
  flex: 1 0 0%;
}