.c_parallax {
  width: 100%;
  height: auto;
  overflow: hidden;
}

.c_parallax__image {
  width: 100%;
  height: calc(100% + 70px);
  object-fit: cover;
}
@media screen and (max-width: 749px) {
  .c_parallax__image {
    height: calc(100% + 30px);
  }
}