.dino-loader {
  width: 100%;
  max-width: 600px;
  height: 150px;
  position: relative;
  overflow: hidden;
  margin: 0 auto;
  border-bottom: 1px solid #ddd;
  display: flex;
  justify-content: center;
}

.dino-runner {
  width: 44px;
  height: 47px;
  position: absolute;
  bottom: 12px;
  left: 50%;
  margin-left: -22px;
  z-index: 2;
  background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAQgAAAAvAgMAAABiRrxWAAAADFBMVEX///9TU1P39/f///+TS9URAAAAAXRSTlMAQObYZgAAAPpJREFUeF7d0jFKRkEMhdGLMM307itNLALyVmHvJuzTDMjdn72E95PGFEZSmeoU4YMMgxhskvQec8YSVFX1NhGcS5ywtbmC8khcZeKq+ZWJ4F8Sr2+ZCErjkJFEfcjAc/6/BMlfcz6xHdhRthYzIZhIHMcTVY1scUUiAphK8CMSPUbieTBhvD9Lj0vyV4wklEGzHpciKGOJoBp7XDcFs4kWxxM7Ey3iZ8JbzASAvMS7XLOJHTTvEkEZSeQl7DMuwVyCasqK5+XzQRYLUJlMbPXjFcn3m8eKBSjWZMJwvGIOvViAzCbUj1VEDoqFOEQGE3SyInJQLOQMJL4B7enP1UbLXJQAAAAASUVORK5CYII=");

  animation:
    dinoRun 0.25s infinite steps(2),
    dinoJump 1.5s infinite linear;
}

.dino-obstacle {
  width: 17px;
  height: 35px;
  position: absolute;
  bottom: 12px;
  right: -50px;
  z-index: 1;
  background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGYAAAAjCAMAAABRlI+PAAAADFBMVEX////////39/dTU1PhglcSAAAAAXRSTlMAQObYZgAAAPNJREFUeF7tlkEKwzAMBLXr//+5iQhU7gRRQkyhZI+DhwH74jhmO+oIJBVwURljuAXagG5QqkSgBLqg3JnxJ1Cb8SmQ3o6gpO85owGlOB4m2BNKJ11BSd01owGlOHkcIAuHkz6UNpPKgozPM54dADHjJuNhZiJxdQCQgZJeBczgCAAy3yhPJvcnmdC9mZwBIsQMFV5AkzHBNknFgcKM+oyDIFcfCAoy03m+jSMIcmoVZkKqSjr1fghyahRmoKRUHYLiSI1SMlCq5CDgX6BXmKkfn+oQ0KEyyrzoy8GbXJ9xrM/YjhUZgl9nnsyTCe9rgSRdV15CwRcIEu8GGQAAAABJRU5ErkJggg==");

  animation: moveObstacle 1.5s infinite linear;
}

.dino-ground {
  width: 100%;
  height: 12px;
  position: absolute;
  bottom: 5px;
  background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAABLAAAAAMAgMAAAAPCKxBAAAABlBMVEX///9TU1NYzE1OAAAAAXRSTlMAQObYZgAAALJJREFUeF7t1EEKAyEMhtEvMNm7sPfJEVyY+1+ltLgYAsrQCtWhbxEhQvgxIJtSZypxa/WGshgzKdbq/UihMFMlt3o/CspEYoihIMaAb6mCvM6C+BTAeyo+wN4yykV/6pVfkdLpVyI1hh7GJ6QunUoLEQlQglNP2nkQkeF8+ei9cLxMue1qxVRfk1Ej0s6AEGWfVOk0QUtnK5Xo0Lac6wpdtnQqB6VxomPaz+dgF1PaqqmeWJlz1jYUaSIAAAAASUVORK5CYII=");
  background-repeat: repeat-x;
  animation: moveGround 4s linear infinite;
}

@keyframes dinoRun {
  from {
    background-position: -44px 0;
  }
  to {
    background-position: -132px 0;
  }
}

@keyframes dinoJump {
  0%,
  35% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-60px);
  }
  65%,
  100% {
    transform: translateY(0);
  }
}

@keyframes moveObstacle {
  0% {
    right: -50px;
  }
  100% {
    right: 100%;
  }
}

@keyframes moveGround {
  from {
    background-position: 0 0;
  }
  to {
    background-position: -1200px 0;
  }
}