.img-placeholder {
  width: 100%;
  height: 400px;
  background-color: #d3d3d3;
}

.card-container {
  position: relative;
  overflow: hidden;
}

.text-container {
  position: absolute;
  box-sizing: border-box;
  padding-top: 0.5em;
  padding-bottom: 0.5em;
  padding-left: 1em;
  padding-right: 1em;
  width: 100%;
  height: 40%;
  bottom: 0;
  left: 0;
  transition:
    padding-top 0.2s,
    height 0.2s ease-in-out;
}

.card-container:hover .text-container,
.card-container .text-container.show {
  box-sizing: border-box;
  height: 100%;
  padding-top: 30%;
}

.subtitle-container {
  margin-top: 2em;
  opacity: 0;
  transition: opacity 0.2s ease-in-out;
}

.card-container:hover,
.card-container .text-container.show {
  .subtitle-container {
    margin-top: 2em;
    opacity: 1;
  }
}