.loader {
  position: fixed;
  z-index: 99;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  display: flex;
  justify-content: center;
  align-items: center;
  background: lightgray;
}

.loader > img {
  width: 100px;
}

.loader.hidden {
  animation: fadeOut 1s;
  animation-fill-mode: forwards;
}

#title {
  text-align: center;
}

.content {
  display: flex;
  justify-content: space-evenly;
  flex-wrap: wrap;
}

@keyframes fadeOut {
  100% {
    opacity: 0;
    visibility: hidden;
  }
}

.thumb {
  height: 100px;
  border: 1px solid black;
  margin: 10px;
}