.fv-stock {
  position: relative;
}

.fv-stock__btn {
  display: inline-block;
  width: 78%;
  position: absolute;
  bottom: 2rem;
  left: 50%;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
}

@media (max-width: 769px) {
  .fv-stock__btn {
    width: 93%;
    bottom: 1.5rem;
  }
}