XeNote/components/alien_styles.css

.ufo {
  font-size: 5rem;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.monster {
  font-size: 0.7em;
  width: 1em;
  height: 1.3em;
  border-radius: 0.5em 0.5em 0em 0em / 0.6em 0.6em 0em 0em;
  box-sizing: content-box;
  border: 0.07em solid transparent;
  position: relative;
  user-select: none;
  cursor: grab;
}

.monster.small {
  font-size: 4rem;
}

.body {
  width: 100%;
  height: 100%;
  background-color: currentColor;
  border-radius: inherit;
  position: relative;
  transform-origin: bottom center;
  animation: bouncebody alternate infinite 400ms 40ms ease-in-out;
}

.eyes,
.eye-lid {
  text-align: center;
  display: flex;
  font-size: 0.65em;
  width: 1em;
  height: 1em;
  position: absolute;
  left: 0.05em;
  top: 0.3em;
  animation: turn infinite 10s ease-in-out;
}


.eye {
  position: relative;
  display: inline-block;
  border-radius: 50%;
  width: 75%;
  height: 75%;
  background-color: black;
  border-radius: 50%;
}

.eye-lid {
  background-color: white;
  border-radius: 0.5em 0.5em 0.5em 0.5em / 0.6em 0.6em 0.4em 0.4em;
  box-shadow: 0.03em 0.14em rgba(0, 0, 0, 0.1);
  animation: blink forwards turn infinite 10s ease-in-out;
}

.eye:after {
  /*white shadow*/
  --pupil-size: 0.2em;
  position: absolute;
  top: 0.05em;
  left: 0.3em;
  width: var(--pupil-size);
  height: var(--pupil-size);
  background: white;
  border-radius: 50%;
  content: " ";
}

.mouth {
  font-size: 0.2em;
  width: 1em;
  height: 0.3em;
  background: black;
  border-radius: 1.5em 1.5em 0.5em 0.5em;
  position: absolute;
  bottom: 0.8em;
  left: 50%;
  transform: translateX(-50%);
}

.mouth::before {
  width: 50%;
  height: 30%;
  display: block;
  content: ' ';
  background-color: #ff8800;
  border-radius: 50% / 100% 100% 50% 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateY(-10%) translateX(-50%);
}

.vampi-mouth {
  position: absolute;
  background: black;
  overflow: hidden;
  font-size: 0.3em;
  width: 1em;
  height: 0.7em;
  left: 50%;
  bottom: 0.3em;
  transform: translateX(-50%);
  border-radius: 0.7em 0.7em 1.2em 1.2em;
}

.vampi-mouth::before {
  content: '';
  display: block;
  background: #ff8800;
  width: 100%;
  height: 0.2em;
  position: absolute;
  bottom: 0;
  border-radius: 50% 50% 0 0;
}

.vampi-tooth::before,
.vampi-tooth::after,
.vampi-tooth {
  --teeth-size: 0.25em;
  display: block;
  width: 0;
  height: 0;
  font-size: inherit;
  border-left: calc(var(--teeth-size) / 2) solid transparent;
  border-right: calc(var(--teeth-size) / 2) solid transparent;
  border-top: var(--teeth-size) solid #fff;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}

.vampi-tooth:before {
  content: '';
  transform: translateX(-150%) translateY(-100%);
}

.vampi-tooth:after {
  content: '';
  transform: translateX(50%) translateY(-100%);
}

.ear {
  position: absolute;
  top: -1.2em;
  transform-origin: bottom center;
  font-size: 0.3em;
  width: .8em;
  height: 1.5em;
  left: 18%;
  transform: rotate(-10deg);
  animation: antena_e 5s infinite;
}

.ear+.ear {
  left: auto;
  right: 18%;
  transform: rotate(10deg);
  animation: antena_d 5s infinite;
}

.ear:before {
  content: '';
  display: block;
  width: .8em;
  height: .8em;
  position: absolute;
  z-index: 2;
  left: 0;
  border-radius: 50%;
  background: currentColor;
  box-shadow: inset -.1em -.08em rgba(0, 0, 0, .1);
}

.ear:after {
  content: '';
  display: block;
  width: 0.3em;
  height: 100%;
  position: absolute;
  top: .2em;
  left: .3em;
  background: currentColor;
}


@keyframes turn {

  0% {
    left: 0.05em;
  }

  25% {
    left: calc((.05em + .65em)/2);
  }

  50% {
    left: .65em
  }
}

@keyframes blink {

  0%,
  2%,
  60%,
  62%,
  100% {
    transform: scaleX(1) scaleY(1);
  }

  1%,
  61% {
    transform: scaleX(1.3) scaleY(0.1);
  }
}

@keyframes bounce {
  to {
    transform: translateY(4%);
  }
}

@keyframes bouncebody {
  to {
    transform: scaleX(1.03) scaleY(0.97);
  }
}

@keyframes antena_d {
  50% {
    transform: rotate(20deg);
  }
}

@keyframes antena_e {
  50% {
    transform: rotate(-20deg);
  }
}