.snowflake {
  color: #fff;
  font-size: 2em;
  font-family: Arial;
  text-shadow: 0 0 1px navy;
}

@-webkit-keyframes snowflakes-fall{0%{top:-10%}100%{top:100%}}
@-webkit-keyframes snowflakes-shake{0%{-webkit-transform:translateX(0px);transform:translateX(0px)}50%{-webkit-transform:translateX(80px);transform:translateX(80px)}100%{-webkit-transform:translateX(0px);transform:translateX(0px)}}
@keyframes snowflakes-fall{0%{top:-10%}100%{top:100%}}
@keyframes snowflakes-shake{0%{transform:translateX(0px)}50%{transform:translateX(80px)}100%{transform:translateX(0px)}}
.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){font-size: 1.8em;left:1%;-webkit-animation-delay:0s,0s;animation-delay:0s,0s}
.snowflake:nth-of-type(1){font-size: 2em;left:10%;-webkit-animation-delay:1s,1s;animation-delay:1s,1s}
.snowflake:nth-of-type(2){font-size: 2.5em;left:20%;-webkit-animation-delay:6s,.5s;animation-delay:6s,.5s}
.snowflake:nth-of-type(3){font-size: 1.3em;left:30%;-webkit-animation-delay:4s,2s;animation-delay:4s,2s}
.snowflake:nth-of-type(4){font-size: 1.5em;left:40%;-webkit-animation-delay:2s,2s;animation-delay:2s,2s}
.snowflake:nth-of-type(5){font-size: 1.8em;left:50%;-webkit-animation-delay:8s,3s;animation-delay:8s,3s}
.snowflake:nth-of-type(6){font-size: 2.2em;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}