* {
  box-sizing: border-box;
}
body {
  background-color: #4d4d4d;
  display: grid;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  height: 100vh;
  width: 100vw;
}
.snow {
  -webkit-animation-name: move;
          animation-name: move;
  -webkit-animation-timing-function: linear;
          animation-timing-function: linear;
  -webkit-animation-iteration-count: infinite;
          animation-iteration-count: infinite;
  height: 100vh;
  position: absolute;
  left: 0;
  top: 0;
  width: 100vw;
  z-index: 1;
}
.snow:nth-of-type(1) {
  -webkit-animation-duration: 9s;
          animation-duration: 9s;
}
.snow:nth-of-type(2) {
  -webkit-animation-duration: 3s;
          animation-duration: 3s;
}
.snow:nth-of-type(3) {
  -webkit-animation-duration: 8s;
          animation-duration: 8s;
}
.rings {
  position: relative;
  z-index: -1;
}
.ring {
  height: 50px;
  width: 50px;
  border-width: 5px;
  border-radius: 100%;
  border-style: solid;
  position: absolute;
  left: 50%;
  top: 50%;
  margin-left: -25px;
  margin-top: -25px;
}
@media (min-width: 768px) {
  .ring {
    height: 100px;
    width: 100px;
    border-width: 10px;
    margin-left: -50px;
    margin-top: -50px;
  }
}
.ring--red {
  border-color: #eb3350;
  transform: translateX(110%) rotate(90deg);
}
.ring--green {
  border-color: #1f8b3d;
  transform: translate(55%, 45%) rotate(180deg);
  z-index: 2;
}
.ring--black {
  border-color: #000;
  transform: rotate(90deg);
}
.ring--blue {
  border-color: #1587c1;
  transform: translateX(-110%);
}
.ring--yellow {
  border-color: #fab23f;
  transform: translate(-55%, 45%);
  z-index: 1;
}
.ring-segment {
  border-bottom-color: transparent;
  z-index: 3;
}
@-webkit-keyframes move {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 0 100vh;
  }
}
@keyframes move {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 0 100vh;
  }
}