figure {
  position: relative;
  margin: 0;
}

figure figcaption {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1em;
  margin: 0;
  background-color: rgba(0, 0, 0, 0.7);
  color: #fff;
  color: color(display-p3 1 1 1);
  opacity: 0;
  transition: opacity 0.3s;
  /* center text h and v */
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

figure:hover figcaption {
  opacity: 1;
}

@media (hover: none) {
  figure figcaption {
    opacity: 1;
  }
}