* {
  box-sizing: border-box;
}
:root {
  --rotation-speed: 60;
  --size: 75;
  --train-size: 10;
  --train-speed: 25;
}
body {
  -webkit-box-align: center;
          align-items: center;
  background: #0d0d0d;
  display: -webkit-box;
  display: flex;
  -webkit-box-pack: center;
          justify-content: center;
  min-height: 100vh;
  overflow: hidden;
  font-family: sans-serif;
}
h1 {
  margin: 0;
  padding: 0;
  font-size: 1rem;
  font-weight: bold;
  color: #fff;
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
}
.scene {
  height: calc(var(--size) * 1vmin);
  position: absolute;
  width: calc(var(--size) * 1vmin);
  background: #1991e6;
  border-radius: 50%;
}
.globe {
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  height: 100%;
  width: 100%;
}
.globe path {
  fill: #9c3;
  stroke: #453008;
  stroke-width: 1vmin;
  -webkit-transition: all calc(var(--transition-speed) * 1s) ease;
  transition: all calc(var(--transition-speed) * 1s) ease;
}
.train {
  -webkit-animation: travel calc(var(--train-speed) * 1s) infinite linear;
          animation: travel calc(var(--train-speed) * 1s) infinite linear;
  height: calc(var(--train-size) * 1vmin);
  left: 50%;
  offset-path: path(var(--path));
  position: absolute;
  -webkit-transition: all 0.25s ease;
  transition: all 0.25s ease;
  -webkit-transform: translate(0%, -50%) rotateX(0deg) rotateY(0deg);
          transform: translate(0%, -50%) rotateX(0deg) rotateY(0deg);
  top: 50%;
  width: calc(var(--train-size) * 1vmin);
}
.scene__cloud {
  height: calc(var(--height, 10) * 1%);
  width: calc(var(--width, 25) * 1%);
  background: #fff;
  border-radius: 25%/50%;
  position: absolute;
  top: 50%;
  left: 50%;
  opacity: var(--opacity);
  -webkit-transform-origin: center;
          transform-origin: center;
  -webkit-animation: float calc(var(--speed, 10) * 1s) calc(var(--delay, 2) * -1s) infinite linear var(--direction, normal);
          animation: float calc(var(--speed, 10) * 1s) calc(var(--delay, 2) * -1s) infinite linear var(--direction, normal);
}
.bubble circle,
.bubble rect {
  fill: hsl(0, 0%, calc(var(--lightness) * 1%));
}
.globe__face {
  width: calc(var(--size) * 0.5vmin);
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}
.rock-or-hedge {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  -webkit-transform: translate(-50%, -25%);
          transform: translate(-50%, -25%);
  width: calc(var(--size) * 1vmin);
  height: calc(var(--size) * 1vmin);
  offset-path: path(var(--path));
  offset-distance: calc(var(--distance) * 1%);
  -webkit-transition: all 0.25s ease;
  transition: all 0.25s ease;
  background: hsl(var(--hue), calc(var(--saturation) * 1%), calc(var(--lightness) * 1%));
}
.cedar {
  -webkit-transition: all 0.25s ease;
  transition: all 0.25s ease;
  position: absolute;
  top: 50%;
  left: 50%;
  width: calc(var(--size) * 1vmin);
  -webkit-transform: translate(-50%, calc(var(--lightness) * -1%));
          transform: translate(-50%, calc(var(--lightness) * -1%));
  offset-path: path(var(--path));
  offset-distance: calc(var(--distance) * 1%);
}
.cedar rect {
  fill: hsl(20, calc(var(--saturation) * 1%), calc(var(--lightness) * 1%));
}
.cedar path {
  fill: hsl(var(--hue), calc(var(--saturation) * 1%), calc(var(--lightness) * 1%));
}
.tree {
  -webkit-transition: all 0.25s ease;
  transition: all 0.25s ease;
  position: absolute;
  top: 50%;
  left: 50%;
  width: calc(var(--size) * 1vmin);
  -webkit-transform: translate(-50%, calc(var(--lightness) * -1%));
          transform: translate(-50%, calc(var(--lightness) * -1%));
  offset-path: path(var(--path));
  offset-distance: calc(var(--distance) * 1%);
}
.tree rect:nth-of-type(1),
.tree rect:nth-of-type(3) {
  fill: hsl(20, calc(var(--saturation) * 1%), calc(var(--lightness) * 1%));
}
.tree rect:nth-of-type(2),
.tree circle {
  fill: hsl(var(--hue), calc(var(--saturation) * 1%), calc(var(--lightness) * 1%));
}
.sound-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  height: 44px;
  width: 44px;
  background: transparent;
  border: 0;
  cursor: pointer;
}
.sound-toggle path {
  fill: #fff;
}
.sound-toggle path:nth-of-type(2) {
  display: none;
}
.sound-toggle--active path:nth-of-type(1) {
  display: none;
}
.sound-toggle--active path:nth-of-type(2) {
  display: block;
}
@-webkit-keyframes rotate {
  to {
    -webkit-transform: rotate(-360deg);
            transform: rotate(-360deg);
  }
}
@keyframes rotate {
  to {
    -webkit-transform: rotate(-360deg);
            transform: rotate(-360deg);
  }
}
@-webkit-keyframes travel {
  to {
    offset-distance: 100%;
  }
}
@keyframes travel {
  to {
    offset-distance: 100%;
  }
}
@-webkit-keyframes float {
  from {
    -webkit-transform: translate(-50%, -50%) rotate(0deg) translate(0, calc((var(--size) * var(--translation)) * 1vmin));
            transform: translate(-50%, -50%) rotate(0deg) translate(0, calc((var(--size) * var(--translation)) * 1vmin));
  }
  to {
    -webkit-transform: translate(-50%, -50%) rotate(360deg) translate(0, calc((var(--size) * var(--translation)) * 1vmin));
            transform: translate(-50%, -50%) rotate(360deg) translate(0, calc((var(--size) * var(--translation)) * 1vmin));
  }
}
@keyframes float {
  from {
    -webkit-transform: translate(-50%, -50%) rotate(0deg) translate(0, calc((var(--size) * var(--translation)) * 1vmin));
            transform: translate(-50%, -50%) rotate(0deg) translate(0, calc((var(--size) * var(--translation)) * 1vmin));
  }
  to {
    -webkit-transform: translate(-50%, -50%) rotate(360deg) translate(0, calc((var(--size) * var(--translation)) * 1vmin));
            transform: translate(-50%, -50%) rotate(360deg) translate(0, calc((var(--size) * var(--translation)) * 1vmin));
  }
}