*,
html {
  font-size: 16px;
}
body {
  margin: 0;
}

main {
  min-height: 100vh;
  margin: 0;
}

.main-title {
  text-align: center;
  font-size: 2rem;
}

.experiment {
  border: 1px solid black;
  border-radius: 3px;
  min-height: 2rem;
  margin: 1.5rem;
}

.experiment-thumbnail {
  position: relative;
}

.experiment-thumbnail__image {
  width: 100%;
}

.experiment-thumbnail__caption {
  color: white;
  background-image: linear-gradient(to right, black, #fefefe);
  transition: all 0.5s;
  opacity: 0;
  padding: 2rem 0 0 0;
  transform: translateY(-50%);
  text-align: center;
  height: 2rem;
}

.experiment-thumbnail__image:hover + .experiment-thumbnail__caption {
  /* position: absolute; */
  /* bottom: 3rem; */
  opacity: 1;
}