@-webkit-keyframes snowflakes-fall {
  0% { top: -10% }
  100% { top: 100% }
}

@-webkit-keyframes snowflakes-shake {
  0%, 100% { -webkit-transform: translateX(0); transform: translateX(0) }
  50% { -webkit-transform: translateX(80px); transform: translateX(80px) }
}

@keyframes snowflakes-fall {
  0% { top: -10% }
  100% { top: 100% }
}

@keyframes snowflakes-shake {
  0%, 100% { transform: translateX(0) }
  50% { transform: translateX(80px) }
}

.snowflake {
  position: fixed;
  top: -10%;
  z-index: 9999;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  cursor: default;
  -webkit-animation-name: snowflakes-fall, snowflakes-shake;
  -webkit-animation-duration: 10s, 3s;
  -webkit-animation-timing-function: linear, ease-in-out;
  -webkit-animation-iteration-count: infinite, infinite;
  -webkit-animation-play-state: running, running;
  animation-name: snowflakes-fall, snowflakes-shake;
  animation-duration: 10s, 3s;
  animation-timing-function: linear, ease-in-out;
  animation-iteration-count: infinite, infinite;
  animation-play-state: running, running;
}

.snowflake:nth-of-type(0) { left: 1%; -webkit-animation-delay: 0s, 0s; animation-delay: 0s, 0s }
.snowflake:nth-of-type(1) { left: 10%; -webkit-animation-delay: 1s, 1s; animation-delay: 1s, 1s }
.snowflake:nth-of-type(2) { left: 20%; -webkit-animation-delay: 6s, .5s; animation-delay: 6s, .5s }
.snowflake:nth-of-type(3) { left: 30%; -webkit-animation-delay: 4s, 2s; animation-delay: 4s, 2s }
.snowflake:nth-of-type(4) { left: 40%; -webkit-animation-delay: 2s, 2s; animation-delay: 2s, 2s }
.snowflake:nth-of-type(5) { left: 50%; -webkit-animation-delay: 8s, 3s; animation-delay: 8s, 3s }
.snowflake:nth-of-type(6) { left: 60%; -webkit-animation-delay: 6s, 2s; animation-delay: 6s, 2s }
.snowflake:nth-of-type(7) { left: 70%; -webkit-animation-delay: 2.5s, 1s; animation-delay: 2.5s, 1s }
.snowflake:nth-of-type(8) { left: 80%; -webkit-animation-delay: 1s, 0s; animation-delay: 1s, 0s }
.snowflake:nth-of-type(9) { left: 90%; -webkit-animation-delay: 3s, 1.5s; animation-delay: 3s, 1.5s }
.snowflake:nth-of-type(10) { left: 25%; -webkit-animation-delay: 2s, 0s; animation-delay: 2s, 0s }
.snowflake:nth-of-type(11) { left: 65%; -webkit-animation-delay: 4s, 2.5s; animation-delay: 4s, 2.5s }