html, body {
  height: 100%;
}

body {
  background: #2a88c5 url(/cz-20150128-what-color-2-bg.jpg) center center/70%;
  position: relative;
}

#robot {
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate3d(-50%, -50%, 0);
          transform: translate3d(-50%, -50%, 0);
  max-width: 50vw;
  max-height: 80vh;
  margin: 0 auto;
}

#body {
  -webkit-animation: hover 1.1s ease-in-out 0s infinite alternate;
          animation: hover 1.1s ease-in-out 0s infinite alternate;
}

#head {
  -webkit-animation: hover 1.1s ease-in-out 0.05s infinite alternate;
          animation: hover 1.1s ease-in-out 0.05s infinite alternate;
}

#arms {
  -webkit-animation: hover 1.1s ease-in-out 0.1s infinite alternate;
          animation: hover 1.1s ease-in-out 0.1s infinite alternate;
}

#left_arm {
  -webkit-transform-origin: center right;
      -ms-transform-origin: center right;
          transform-origin: center right;
  -webkit-animation: arms_bounce_left 1.1s ease-in-out 0s infinite alternate;
          animation: arms_bounce_left 1.1s ease-in-out 0s infinite alternate;
}

#right_arm {
  -webkit-transform-origin: center left;
      -ms-transform-origin: center left;
          transform-origin: center left;
  -webkit-animation: arms_bounce_right 1.1s ease-in-out 0s infinite alternate;
          animation: arms_bounce_right 1.1s ease-in-out 0s infinite alternate;
}

#eyes ellipse {
  -webkit-transform-origin: center center;
      -ms-transform-origin: center center;
          transform-origin: center center;
  -webkit-animation: eyes_blink 2s ease-out 0s infinite alternate;
          animation: eyes_blink 2s ease-out 0s infinite alternate;
}

#shadow {
  -webkit-transform-origin: center center;
      -ms-transform-origin: center center;
          transform-origin: center center;
  -webkit-animation: shadow 1.1s ease-in-out 0s infinite alternate;
          animation: shadow 1.1s ease-in-out 0s infinite alternate;
}

@-webkit-keyframes hover {
  0% {
    -webkit-transform: translate3d(0, 80px, 0);
            transform: translate3d(0, 80px, 0);
  }
  100% {
    -webkit-transform: translate3d(0, 30px, 0);
            transform: translate3d(0, 30px, 0);
  }
}

@keyframes hover {
  0% {
    -webkit-transform: translate3d(0, 80px, 0);
            transform: translate3d(0, 80px, 0);
  }
  100% {
    -webkit-transform: translate3d(0, 30px, 0);
            transform: translate3d(0, 30px, 0);
  }
}
@-webkit-keyframes shadow {
  0% {
    -webkit-transform: translate3d(0, 0, 0) scale(1.5, 1.2);
            transform: translate3d(0, 0, 0) scale(1.5, 1.2);
    opacity: 0.4;
  }
  100% {
    -webkit-transform: translate3d(0, 0, 0) scale(1, 1);
            transform: translate3d(0, 0, 0) scale(1, 1);
    opacity: 0.2;
  }
}
@keyframes shadow {
  0% {
    -webkit-transform: translate3d(0, 0, 0) scale(1.5, 1.2);
            transform: translate3d(0, 0, 0) scale(1.5, 1.2);
    opacity: 0.4;
  }
  100% {
    -webkit-transform: translate3d(0, 0, 0) scale(1, 1);
            transform: translate3d(0, 0, 0) scale(1, 1);
    opacity: 0.2;
  }
}
@-webkit-keyframes arms_bounce_left {
  0% {
    -webkit-transform: translate3d(0, 80px, 0) rotate(0deg);
            transform: translate3d(0, 80px, 0) rotate(0deg);
  }
  100% {
    -webkit-transform: translate3d(0, 30px, 0) rotate(-10deg);
            transform: translate3d(0, 30px, 0) rotate(-10deg);
  }
}
@keyframes arms_bounce_left {
  0% {
    -webkit-transform: translate3d(0, 80px, 0) rotate(0deg);
            transform: translate3d(0, 80px, 0) rotate(0deg);
  }
  100% {
    -webkit-transform: translate3d(0, 30px, 0) rotate(-10deg);
            transform: translate3d(0, 30px, 0) rotate(-10deg);
  }
}
@-webkit-keyframes arms_bounce_right {
  0% {
    -webkit-transform: translate3d(0, 80px, 0) rotate(0deg);
            transform: translate3d(0, 80px, 0) rotate(0deg);
  }
  100% {
    -webkit-transform: translate3d(0, 30px, 0) rotate(10deg);
            transform: translate3d(0, 30px, 0) rotate(10deg);
  }
}
@keyframes arms_bounce_right {
  0% {
    -webkit-transform: translate3d(0, 80px, 0) rotate(0deg);
            transform: translate3d(0, 80px, 0) rotate(0deg);
  }
  100% {
    -webkit-transform: translate3d(0, 30px, 0) rotate(10deg);
            transform: translate3d(0, 30px, 0) rotate(10deg);
  }
}
@-webkit-keyframes eyes_blink {
  0% {
    -webkit-transform: scale(1, 1);
            transform: scale(1, 1);
  }
  90% {
    -webkit-transform: scale(1, 1);
            transform: scale(1, 1);
  }
  95% {
    -webkit-transform: scale(0.8, 0);
            transform: scale(0.8, 0);
  }
  100% {
    -webkit-transform: scale(1, 1);
            transform: scale(1, 1);
  }
}
@keyframes eyes_blink {
  0% {
    -webkit-transform: scale(1, 1);
            transform: scale(1, 1);
  }
  90% {
    -webkit-transform: scale(1, 1);
            transform: scale(1, 1);
  }
  95% {
    -webkit-transform: scale(0.8, 0);
            transform: scale(0.8, 0);
  }
  100% {
    -webkit-transform: scale(1, 1);
            transform: scale(1, 1);
  }
}