* {
  margin: 0;
  padding: 0;
  position: relative;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #ff5500;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

#container {
  overflow: hidden;
  animation: bounce 5s ease-in-out infinite;
}

img {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

img[id$="traits"] {
  width: 500%;
}

@keyframes bounce {
  0% {
    transform: translateY(-5%);
  }
  50% {
    transform: translateY(5%);
  }
  100% {
    transform: translateY(-5%);
  }
}