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HTML

              
                <body>
  <div class='snow-flakes'> <div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div><div class='flake'></div></div>
</body>
              
            
!

CSS

              
                /* Snowfall Animation */
body{
  background:black;
  overflow:hidden;
}
.flake{background-color:#fff;border-radius:100%;position:absolute;top:-10vh;padding:1vw;}
.flake:nth-child(1){animation:snow 19s linear 40s infinite normal backwards;left:79%;opacity:0.71;padding:0.11vw;}
.flake:nth-child(2){animation:snow 19s linear 10s infinite normal backwards;left:57%;opacity:1.1;padding:0.34vw;}
.flake:nth-child(3){animation:snow 14s linear 15s infinite normal backwards;left:5%;opacity:0.82;padding:0.12vw;}
.flake:nth-child(4){animation:snow 14s linear 30s infinite normal backwards;left:95%;opacity:0.32;padding:0.28vw;}
.flake:nth-child(5){animation:snow 12s linear 8s infinite normal backwards;left:54%;opacity:0.48;padding:0.41vw;}
.flake:nth-child(6){animation:snow 16s linear 30s infinite normal backwards;left:20%;opacity:0.64;padding:0.28vw;}
.flake:nth-child(7){animation:snow 12s linear 36s infinite normal backwards;left:20%;opacity:0.28;padding:0.34vw;}
.flake:nth-child(8){animation:snow 13s linear 3s infinite normal backwards;left:62%;opacity:0.55;padding:0.14vw;}
.flake:nth-child(9){animation:snow 18s linear 44s infinite normal backwards;left:65%;opacity:0.6;padding:0.32vw;}
.flake:nth-child(10){animation:snow 16s linear 32s infinite normal backwards;left:90%;opacity:0.55;padding:0.18vw;}
.flake:nth-child(11){animation:snow 14s linear 50s infinite normal backwards;left:6%;opacity:0.98;padding:0.39vw;}
.flake:nth-child(12){animation:snow 11s linear 22s infinite normal backwards;left:93%;opacity:0.51;padding:0.2vw;}
.flake:nth-child(13){animation:snow 13s linear 8s infinite normal backwards;left:61%;opacity:0.21;padding:0.47vw;}
.flake:nth-child(14){animation:snow 15s linear 43s infinite normal backwards;left:19%;opacity:0.46;padding:0.25vw;}
.flake:nth-child(15){animation:snow 11s linear 13s infinite normal backwards;left:94%;opacity:0.83;padding:0.29vw;}
.flake:nth-child(16){animation:snow 19s linear 15s infinite normal backwards;left:92%;opacity:0.83;padding:0.28vw;}
.flake:nth-child(17){animation:snow 19s linear 30s infinite normal backwards;left:14%;opacity:0.3;padding:0.36vw;}
.flake:nth-child(18){animation:snow 20s linear 41s infinite normal backwards;left:46%;opacity:1.07;padding:0.16vw;}
.flake:nth-child(19){animation:snow 15s linear 7s infinite normal backwards;left:46%;opacity:1.03;padding:0.29vw;}
.flake:nth-child(20){animation:snow 14s linear 7s infinite normal backwards;left:40%;opacity:1.08;padding:0.13vw;}
.flake:nth-child(21){animation:snow 16s linear 18s infinite normal backwards;left:1%;opacity:0.29;padding:0.46vw;}
.flake:nth-child(22){animation:snow 16s linear 3s infinite normal backwards;left:35%;opacity:0.64;padding:0.25vw;}
.flake:nth-child(23){animation:snow 19s linear 45s infinite normal backwards;left:9%;opacity:0.39;padding:0.3vw;}
.flake:nth-child(24){animation:snow 17s linear 40s infinite normal backwards;left:73%;opacity:0.4;padding:0.2vw;}
.flake:nth-child(25){animation:snow 13s linear 10s infinite normal backwards;left:78%;opacity:0.4;padding:0.28vw;}
.flake:nth-child(26){animation:snow 20s linear 6s infinite normal backwards;left:23%;opacity:0.77;padding:0.44vw;}
.flake:nth-child(27){animation:snow 14s linear 17s infinite normal backwards;left:46%;opacity:0.36;padding:0.11vw;}
.flake:nth-child(28){animation:snow 15s linear 14s infinite normal backwards;left:35%;opacity:0.85;padding:0.31vw;}
.flake:nth-child(29){animation:snow 16s linear 47s infinite normal backwards;left:59%;opacity:0.85;padding:0.29vw;}
.flake:nth-child(30){animation:snow 11s linear 48s infinite normal backwards;left:98%;opacity:0.51;padding:0.26vw;}
.flake:nth-child(31){animation:snow 20s linear 7s infinite normal backwards;left:98%;opacity:0.15;padding:0.39vw;}
.flake:nth-child(32){animation:snow 19s linear 44s infinite normal backwards;left:34%;opacity:0.54;padding:0.37vw;}
.flake:nth-child(33){animation:snow 11s linear 8s infinite normal backwards;left:14%;opacity:1.1;padding:0.37vw;}
.flake:nth-child(34){animation:snow 14s linear 28s infinite normal backwards;left:34%;opacity:0.36;padding:0.5vw;}
.flake:nth-child(35){animation:snow 16s linear 21s infinite normal backwards;left:87%;opacity:0.72;padding:0.19vw;}
.flake:nth-child(36){animation:snow 17s linear 18s infinite normal backwards;left:58%;opacity:0.48;padding:0.34vw;}
.flake:nth-child(37){animation:snow 11s linear 49s infinite normal backwards;left:35%;opacity:0.42;padding:0.48vw;}
.flake:nth-child(38){animation:snow 13s linear 29s infinite normal backwards;left:8%;opacity:0.96;padding:0.5vw;}
.flake:nth-child(39){animation:snow 15s linear 43s infinite normal backwards;left:36%;opacity:0.41;padding:0.24vw;}
.flake:nth-child(40){animation:snow 13s linear 46s infinite normal backwards;left:18%;opacity:0.13;padding:0.15vw;}
.flake:nth-child(41){animation:snow 14s linear 22s infinite normal backwards;left:34%;opacity:0.86;padding:0.46vw;}
.flake:nth-child(42){animation:snow 19s linear 3s infinite normal backwards;left:66%;opacity:0.82;padding:0.11vw;}
.flake:nth-child(43){animation:snow 15s linear 46s infinite normal backwards;left:75%;opacity:0.69;padding:0.26vw;}
.flake:nth-child(44){animation:snow 14s linear 12s infinite normal backwards;left:55%;opacity:0.33;padding:0.39vw;}
.flake:nth-child(45){animation:snow 16s linear 33s infinite normal backwards;left:95%;opacity:0.19;padding:0.47vw;}
.flake:nth-child(46){animation:snow 16s linear 15s infinite normal backwards;left:72%;opacity:0.2;padding:0.48vw;}
.flake:nth-child(47){animation:snow 16s linear 8s infinite normal backwards;left:61%;opacity:0.39;padding:0.49vw;}
.flake:nth-child(48){animation:snow 12s linear 21s infinite normal backwards;left:15%;opacity:0.29;padding:0.42vw;}
.flake:nth-child(49){animation:snow 17s linear 26s infinite normal backwards;left:16%;opacity:0.52;padding:0.45vw;}
.flake:nth-child(50){animation:snow 11s linear 42s infinite normal backwards;left:67%;opacity:1.01;padding:0.16vw;}
.flake:nth-child(51){animation:snow 11s linear 29s infinite normal backwards;left:58%;opacity:0.16;padding:0.3vw;}
.flake:nth-child(52){animation:snow 14s linear 33s infinite normal backwards;left:85%;opacity:1.04;padding:0.2vw;}
.flake:nth-child(53){animation:snow 14s linear 10s infinite normal backwards;left:15%;opacity:0.92;padding:0.35vw;}
.flake:nth-child(54){animation:snow 17s linear 44s infinite normal backwards;left:88%;opacity:0.29;padding:0.25vw;}
.flake:nth-child(55){animation:snow 17s linear 20s infinite normal backwards;left:55%;opacity:0.27;padding:0.26vw;}
.flake:nth-child(56){animation:snow 15s linear 27s infinite normal backwards;left:97%;opacity:0.99;padding:0.33vw;}
.flake:nth-child(57){animation:snow 13s linear 31s infinite normal backwards;left:72%;opacity:1.1;padding:0.13vw;}
.flake:nth-child(58){animation:snow 11s linear 6s infinite normal backwards;left:69%;opacity:0.99;padding:0.15vw;}
.flake:nth-child(59){animation:snow 11s linear 23s infinite normal backwards;left:46%;opacity:0.9;padding:0.19vw;}
.flake:nth-child(60){animation:snow 19s linear 16s infinite normal backwards;left:34%;opacity:1.08;padding:0.15vw;}
.flake:nth-child(61){animation:snow 17s linear 21s infinite normal backwards;left:4%;opacity:1.04;padding:0.43vw;}
.flake:nth-child(62){animation:snow 18s linear 3s infinite normal backwards;left:80%;opacity:0.26;padding:0.16vw;}
.flake:nth-child(63){animation:snow 12s linear 34s infinite normal backwards;left:19%;opacity:0.9;padding:0.36vw;}
.flake:nth-child(64){animation:snow 17s linear 7s infinite normal backwards;left:69%;opacity:0.63;padding:0.29vw;}
.flake:nth-child(65){animation:snow 15s linear 36s infinite normal backwards;left:20%;opacity:0.16;padding:0.49vw;}
.flake:nth-child(66){animation:snow 12s linear 6s infinite normal backwards;left:29%;opacity:0.81;padding:0.45vw;}
.flake:nth-child(67){animation:snow 14s linear 22s infinite normal backwards;left:2%;opacity:0.69;padding:0.47vw;}
.flake:nth-child(68){animation:snow 16s linear 41s infinite normal backwards;left:8%;opacity:0.44;padding:0.2vw;}
.flake:nth-child(69){animation:snow 18s linear 5s infinite normal backwards;left:14%;opacity:0.79;padding:0.22vw;}
.flake:nth-child(70){animation:snow 20s linear 12s infinite normal backwards;left:25%;opacity:0.23;padding:0.49vw;}
.flake:nth-child(71){animation:snow 20s linear 32s infinite normal backwards;left:43%;opacity:0.65;padding:0.23vw;}
.flake:nth-child(72){animation:snow 15s linear 3s infinite normal backwards;left:25%;opacity:0.42;padding:0.29vw;}
.flake:nth-child(73){animation:snow 16s linear 20s infinite normal backwards;left:9%;opacity:1.01;padding:0.24vw;}
.flake:nth-child(74){animation:snow 12s linear 26s infinite normal backwards;left:64%;opacity:0.55;padding:0.43vw;}
.flake:nth-child(75){animation:snow 19s linear 17s infinite normal backwards;left:85%;opacity:1.08;padding:0.27vw;}
.flake:nth-child(76){animation:snow 18s linear 3s infinite normal backwards;left:100%;opacity:0.63;padding:0.18vw;}
.flake:nth-child(77){animation:snow 14s linear 19s infinite normal backwards;left:98%;opacity:0.35;padding:0.14vw;}
.flake:nth-child(78){animation:snow 13s linear 3s infinite normal backwards;left:79%;opacity:0.25;padding:0.14vw;}
.flake:nth-child(79){animation:snow 18s linear 28s infinite normal backwards;left:72%;opacity:0.49;padding:0.48vw;}
.flake:nth-child(80){animation:snow 19s linear 3s infinite normal backwards;left:79%;opacity:0.19;padding:0.35vw;}
.flake:nth-child(81){animation:snow 13s linear 48s infinite normal backwards;left:14%;opacity:0.66;padding:0.48vw;}
.flake:nth-child(82){animation:snow 15s linear 1s infinite normal backwards;left:3%;opacity:0.72;padding:0.34vw;}
.flake:nth-child(83){animation:snow 15s linear 36s infinite normal backwards;left:42%;opacity:1.08;padding:0.26vw;}
.flake:nth-child(84){animation:snow 14s linear 15s infinite normal backwards;left:98%;opacity:0.41;padding:0.17vw;}
.flake:nth-child(85){animation:snow 18s linear 20s infinite normal backwards;left:99%;opacity:0.86;padding:0.32vw;}
.flake:nth-child(86){animation:snow 20s linear 14s infinite normal backwards;left:43%;opacity:0.27;padding:0.3vw;}
.flake:nth-child(87){animation:snow 14s linear 44s infinite normal backwards;left:64%;opacity:0.83;padding:0.19vw;}
.flake:nth-child(88){animation:snow 16s linear 24s infinite normal backwards;left:11%;opacity:0.83;padding:0.48vw;}
.flake:nth-child(89){animation:snow 13s linear 24s infinite normal backwards;left:62%;opacity:0.26;padding:0.11vw;}
.flake:nth-child(90){animation:snow 18s linear 44s infinite normal backwards;left:72%;opacity:0.92;padding:0.13vw;}
.flake:nth-child(91){animation:snow 13s linear 20s infinite normal backwards;left:72%;opacity:0.71;padding:0.31vw;}
.flake:nth-child(92){animation:snow 20s linear 14s infinite normal backwards;left:80%;opacity:0.69;padding:0.38vw;}
.flake:nth-child(93){animation:snow 11s linear 21s infinite normal backwards;left:47%;opacity:1.01;padding:0.48vw;}
.flake:nth-child(94){animation:snow 15s linear 35s infinite normal backwards;left:51%;opacity:0.85;padding:0.32vw;}
.flake:nth-child(95){animation:snow 11s linear 47s infinite normal backwards;left:85%;opacity:0.97;padding:0.29vw;}
.flake:nth-child(96){animation:snow 18s linear 37s infinite normal backwards;left:54%;opacity:0.25;padding:0.45vw;}
.flake:nth-child(97){animation:snow 17s linear 39s infinite normal backwards;left:15%;opacity:0.35;padding:0.26vw;}
.flake:nth-child(98){animation:snow 15s linear 5s infinite normal backwards;left:61%;opacity:0.37;padding:0.21vw;}
.flake:nth-child(99){animation:snow 11s linear 2s infinite normal backwards;left:8%;opacity:0.32;padding:0.42vw;}
.flake:nth-child(100){animation:snow 15s linear 19s infinite normal backwards;left:31%;opacity:0.85;padding:0.5vw;}
.flake:nth-child(101){animation:snow 13s linear 14s infinite normal backwards;left:19%;opacity:0.62;padding:0.32vw;}
.flake:nth-child(102){animation:snow 20s linear 42s infinite normal backwards;left:76%;opacity:0.87;padding:0.31vw;}
.flake:nth-child(103){animation:snow 15s linear 41s infinite normal backwards;left:49%;opacity:0.37;padding:0.25vw;}
.flake:nth-child(104){animation:snow 14s linear 42s infinite normal backwards;left:80%;opacity:0.91;padding:0.11vw;}
.flake:nth-child(105){animation:snow 19s linear 48s infinite normal backwards;left:78%;opacity:0.99;padding:0.49vw;}
.flake:nth-child(106){animation:snow 14s linear 11s infinite normal backwards;left:40%;opacity:1.09;padding:0.22vw;}
.flake:nth-child(107){animation:snow 15s linear 42s infinite normal backwards;left:67%;opacity:1.07;padding:0.47vw;}
.flake:nth-child(108){animation:snow 12s linear 28s infinite normal backwards;left:36%;opacity:0.58;padding:0.37vw;}
.flake:nth-child(109){animation:snow 15s linear 33s infinite normal backwards;left:92%;opacity:0.68;padding:0.49vw;}
.flake:nth-child(110){animation:snow 16s linear 5s infinite normal backwards;left:42%;opacity:0.47;padding:0.46vw;}
.flake:nth-child(111){animation:snow 20s linear 24s infinite normal backwards;left:17%;opacity:0.62;padding:0.43vw;}
.flake:nth-child(112){animation:snow 13s linear 1s infinite normal backwards;left:9%;opacity:0.55;padding:0.21vw;}
.flake:nth-child(113){animation:snow 12s linear 22s infinite normal backwards;left:20%;opacity:0.33;padding:0.27vw;}
.flake:nth-child(114){animation:snow 20s linear 36s infinite normal backwards;left:16%;opacity:0.28;padding:0.12vw;}
.flake:nth-child(115){animation:snow 15s linear 6s infinite normal backwards;left:39%;opacity:0.13;padding:0.31vw;}
.flake:nth-child(116){animation:snow 20s linear 35s infinite normal backwards;left:62%;opacity:0.21;padding:0.46vw;}
.flake:nth-child(117){animation:snow 12s linear 14s infinite normal backwards;left:63%;opacity:0.14;padding:0.34vw;}
.flake:nth-child(118){animation:snow 18s linear 14s infinite normal backwards;left:49%;opacity:0.85;padding:0.11vw;}
.flake:nth-child(119){animation:snow 16s linear 27s infinite normal backwards;left:85%;opacity:0.78;padding:0.4vw;}
.flake:nth-child(120){animation:snow 13s linear 27s infinite normal backwards;left:64%;opacity:0.18;padding:0.19vw;}
.flake:nth-child(121){animation:snow 19s linear 4s infinite normal backwards;left:35%;opacity:0.32;padding:0.14vw;}
.flake:nth-child(122){animation:snow 18s linear 50s infinite normal backwards;left:35%;opacity:1.02;padding:0.38vw;}
.flake:nth-child(123){animation:snow 12s linear 7s infinite normal backwards;left:16%;opacity:1.1;padding:0.42vw;}
.flake:nth-child(124){animation:snow 16s linear 15s infinite normal backwards;left:10%;opacity:0.25;padding:0.19vw;}
.flake:nth-child(125){animation:snow 20s linear 12s infinite normal backwards;left:71%;opacity:0.64;padding:0.37vw;}
.flake:nth-child(126){animation:snow 15s linear 14s infinite normal backwards;left:33%;opacity:0.39;padding:0.25vw;}
.flake:nth-child(127){animation:snow 18s linear 36s infinite normal backwards;left:44%;opacity:0.38;padding:0.5vw;}
.flake:nth-child(128){animation:snow 16s linear 4s infinite normal backwards;left:40%;opacity:0.61;padding:0.4vw;}
.flake:nth-child(129){animation:snow 11s linear 5s infinite normal backwards;left:81%;opacity:0.53;padding:0.2vw;}
.flake:nth-child(130){animation:snow 15s linear 14s infinite normal backwards;left:44%;opacity:0.9;padding:0.37vw;}
.flake:nth-child(131){animation:snow 16s linear 7s infinite normal backwards;left:68%;opacity:0.47;padding:0.38vw;}
.flake:nth-child(132){animation:snow 15s linear 36s infinite normal backwards;left:99%;opacity:0.46;padding:0.36vw;}
.flake:nth-child(133){animation:snow 13s linear 25s infinite normal backwards;left:8%;opacity:0.64;padding:0.43vw;}
.flake:nth-child(134){animation:snow 19s linear 38s infinite normal backwards;left:71%;opacity:0.97;padding:0.35vw;}
.flake:nth-child(135){animation:snow 20s linear 48s infinite normal backwards;left:96%;opacity:1;padding:0.29vw;}
.flake:nth-child(136){animation:snow 13s linear 42s infinite normal backwards;left:17%;opacity:0.91;padding:0.42vw;}
.flake:nth-child(137){animation:snow 16s linear 41s infinite normal backwards;left:34%;opacity:0.94;padding:0.28vw;}
.flake:nth-child(138){animation:snow 18s linear 22s infinite normal backwards;left:82%;opacity:0.27;padding:0.38vw;}
.flake:nth-child(139){animation:snow 13s linear 22s infinite normal backwards;left:51%;opacity:0.43;padding:0.5vw;}
.flake:nth-child(140){animation:snow 19s linear 22s infinite normal backwards;left:54%;opacity:0.89;padding:0.41vw;}
.flake:nth-child(141){animation:snow 16s linear 31s infinite normal backwards;left:54%;opacity:0.46;padding:0.12vw;}
.flake:nth-child(142){animation:snow 11s linear 49s infinite normal backwards;left:2%;opacity:0.75;padding:0.29vw;}
.flake:nth-child(143){animation:snow 15s linear 1s infinite normal backwards;left:63%;opacity:0.3;padding:0.29vw;}
.flake:nth-child(144){animation:snow 18s linear 26s infinite normal backwards;left:46%;opacity:0.98;padding:0.43vw;}
.flake:nth-child(145){animation:snow 12s linear 29s infinite normal backwards;left:87%;opacity:0.31;padding:0.33vw;}
.flake:nth-child(146){animation:snow 16s linear 1s infinite normal backwards;left:37%;opacity:0.42;padding:0.13vw;}
.flake:nth-child(147){animation:snow 17s linear 45s infinite normal backwards;left:38%;opacity:0.3;padding:0.44vw;}
.flake:nth-child(148){animation:snow 19s linear 35s infinite normal backwards;left:65%;opacity:0.77;padding:0.21vw;}
.flake:nth-child(149){animation:snow 16s linear 18s infinite normal backwards;left:43%;opacity:0.14;padding:0.37vw;}
.flake:nth-child(150){animation:snow 14s linear 26s infinite normal backwards;left:46%;opacity:0.5;padding:0.5vw;}
@keyframes snow{4%{transform:translate(.4vw,4vh);}8%{transform:translate(-.2vw,8vh);}12%{transform:translate(.4vw,12vh);}16%{transform:translate(.4vw,16vh);}20%{transform:translate(-.4vw,20vh);}24%{transform:translate(.4vw,24vh);}28%{transform:translate(-.2vw,28vh);}32%{transform:translate(.4vw,32vh);}36%{transform:translate(.4vw,36vh);}40%{transform:translate(-.4vw,40vh);}44%{transform:translate(.4vw,44vh);}48%{transform:translate(-.2vw,48vh);}52%{transform:translate(.4vw,52vh);}56%{transform:translate(.4vw,56vh);}60%{transform:translate(-.4vw,60vh);}64%{transform:translate(.4vw,64vh);}68%{transform:translate(-.2vw,68vh);}72%{transform:translate(.4vw,72vh);}76%{transform:translate(.4vw,76vh);}80%{transform:translate(-.4vw,80vh);}84%{transform:translate(.4vw,84vh);}88%{transform:translate(-.2vw,88vh);}92%{transform:translate(.4vw,92vh);}96%{transform:translate(.4vw,96vh);}100%{transform:translate(-.4vw,100vh);}100%{opacity:0;}}
              
            
!

JS

              
                var snowStorm=null;function SnowStorm(){this.flakesMax=128,this.flakesMaxActive=64,this.animationInterval=33,this.flakeBottom=null,this.targetElement=null,this.followMouse=true,this.snowColor="#fff",this.snowCharacter="&bull;",this.snowStick=!0,this.useMeltEffect=!0,this.useTwinkleEffect=!1,this.usePositionFixed=!1,this.flakeLeftOffset=0,this.flakeRightOffset=0,this.flakeWidth=8,this.flakeHeight=8,this.vMaxX=5,this.vMaxY=4,this.zIndex=0;var e=void 0===window.attachEvent?function(e,t,i){return e.addEventListener(t,i,!1)}:function(e,t,i){return e.attachEvent("on"+t,i)},t=void 0===window.attachEvent?function(e,t,i){return e.removeEventListener(t,i,!1)}:function(e,t,i){return e.detachEvent("on"+t,i)};function i(e,t){return isNaN(t)&&(t=0),Math.random()*e+t}var n=this,o=this;this.timers=[],this.flakes=[],this.disabled=!1,this.active=!1;var s=navigator.userAgent.match(/msie/i),l=navigator.userAgent.match(/msie 6/i),a=s&&(l||navigator.userAgent.match(/msie 5/i)),r=navigator.appVersion.match(/windows 98/i),f=navigator.userAgent.match(/iphone/i),m=!!(s&&"BackCompat"==document.compatMode||l||f),h=null,c=null,d=null,u=null,v=null,k=null,g=1,w=!1,y=function(){try{document.createElement("div").style.opacity="0.5"}catch(e){return!1}return!0}(),p=document.createDocumentFragment();null===n.flakeLeftOffset&&(n.flakeLeftOffset=0),null===n.flakeRightOffset&&(n.flakeRightOffset=0),this.meltFrameCount=20,this.meltFrames=[];for(var x=0;x<this.meltFrameCount;x++)this.meltFrames.push(1-x/this.meltFrameCount);this.randomizeWind=function(){var e;if(e=i(n.vMaxX,.2),v=1==parseInt(i(2),10)?-1*e:e,k=i(n.vMaxY,.2),this.flakes)for(var t=0;t<this.flakes.length;t++)this.flakes[t].active&&this.flakes[t].setVelocities()},this.scrollHandler=function(){if(u=n.flakeBottom?0:parseInt(window.scrollY||document.documentElement.scrollTop||document.body.scrollTop,10),isNaN(u)&&(u=0),!w&&!n.flakeBottom&&n.flakes)for(var e=n.flakes.length;e--;)0===n.flakes[e].active&&n.flakes[e].stick()},this.resizeHandler=function(){window.innerWidth||window.innerHeight?(h=window.innerWidth-(s?2:16)-n.flakeRightOffset,d=n.flakeBottom?n.flakeBottom:window.innerHeight):(h=(document.documentElement.clientWidth||document.body.clientWidth||document.body.scrollWidth)-(s?0:8)-n.flakeRightOffset,d=n.flakeBottom?n.flakeBottom:document.documentElement.clientHeight||document.body.clientHeight||document.body.scrollHeight),c=parseInt(h/2,10)},this.resizeHandlerAlt=function(){h=n.targetElement.offsetLeft+n.targetElement.offsetWidth-n.flakeRightOffset,d=n.flakeBottom?n.flakeBottom:n.targetElement.offsetTop+n.targetElement.offsetHeight,c=parseInt(h/2,10)},this.freeze=function(){if(n.disabled)return!1;n.disabled=1;for(var e=n.timers.length;e--;)clearInterval(n.timers[e])},this.resume=function(){if(!n.disabled)return!1;n.disabled=0,n.timerInit()},this.toggleSnow=function(){n.flakes.length?(n.active=!n.active,n.active?(n.show(),n.resume()):(n.stop(),n.freeze())):n.start()},this.stop=function(){this.freeze();for(var e=this.flakes.length;e--;)this.flakes[e].o.style.display="none";t(window,"scroll",n.scrollHandler),t(window,"resize",n.resizeHandler),a||(t(window,"blur",n.freeze),t(window,"focus",n.resume))},this.show=function(){for(var e=this.flakes.length;e--;)this.flakes[e].o.style.display="block"},this.SnowFlake=function(e,t,n,o){var s=this,l=e;this.type=t,this.x=n||parseInt(i(h-20),10),this.y=isNaN(o)?-i(d)-12:o,this.vX=null,this.vY=null,this.vAmpTypes=[1,1.2,1.4,1.6,1.8],this.vAmp=this.vAmpTypes[this.type],this.melting=!1,this.meltFrameCount=l.meltFrameCount,this.meltFrames=l.meltFrames,this.meltFrame=0,this.twinkleFrame=0,this.active=1,this.fontSize=10+this.type/5*10,this.o=document.createElement("div"),this.o.innerHTML=l.snowCharacter,this.o.style.color=l.snowColor,this.o.style.position=w?"fixed":"absolute",this.o.style.width=l.flakeWidth+"px",this.o.style.height=l.flakeHeight+"px",this.o.style.fontFamily="arial,verdana",this.o.style.overflow="hidden",this.o.style.fontWeight="normal",this.o.style.zIndex=l.zIndex,p.appendChild(this.o),this.refresh=function(){if(isNaN(s.x)||isNaN(s.y))return!1;s.o.style.left=s.x+"px",s.o.style.top=s.y+"px"},this.stick=function(){m||l.targetElement!=document.documentElement&&l.targetElement!=document.body?s.o.style.top=d+u-l.flakeHeight+"px":l.flakeBottom?s.o.style.top=l.flakeBottom+"px":(s.o.style.display="none",s.o.style.top="auto",s.o.style.bottom="0px",s.o.style.position="fixed",s.o.style.display="block")},this.vCheck=function(){s.vX>=0&&s.vX<.2?s.vX=.2:s.vX<0&&s.vX>-.2&&(s.vX=-.2),s.vY>=0&&s.vY<.2&&(s.vY=.2)},this.move=function(){var e=s.vX*g;s.x+=e,s.y+=s.vY*s.vAmp,s.x>=h||h-s.x<l.flakeWidth?s.x=0:e<0&&s.x-l.flakeLeftOffset<0-l.flakeWidth&&(s.x=h-l.flakeWidth-1),s.refresh(),d+u-s.y<l.flakeHeight?(s.active=0,l.snowStick?s.stick():s.recycle()):(l.useMeltEffect&&s.active&&s.type<3&&!s.melting&&Math.random()>.998&&(s.melting=!0,s.melt()),l.useTwinkleEffect&&(s.twinkleFrame?(s.twinkleFrame--,s.o.style.visibility=s.twinkleFrame&&s.twinkleFrame%2==0?"hidden":"visible"):Math.random()>.9&&(s.twinkleFrame=parseInt(20*Math.random(),10))))},this.animate=function(){s.move()},this.setVelocities=function(){s.vX=v+i(.12*l.vMaxX,.1),s.vY=k+i(.12*l.vMaxY,.1)},this.setOpacity=function(e,t){if(!y)return!1;e.style.opacity=t},this.melt=function(){l.useMeltEffect&&s.melting&&s.meltFrame<s.meltFrameCount?(s.meltFrame++,s.setOpacity(s.o,s.meltFrames[s.meltFrame]),s.o.style.fontSize=s.fontSize-s.fontSize*(s.meltFrame/s.meltFrameCount)+"px",s.o.style.lineHeight=l.flakeHeight+2+.75*l.flakeHeight*(s.meltFrame/s.meltFrameCount)+"px"):s.recycle()},this.recycle=function(){s.o.style.display="none",s.o.style.position=w?"fixed":"absolute",s.o.style.bottom="auto",s.setVelocities(),s.vCheck(),s.meltFrame=0,s.melting=!1,s.setOpacity(s.o,1),s.o.style.padding="0px",s.o.style.margin="0px",s.o.style.fontSize=s.fontSize+"px",s.o.style.lineHeight=l.flakeHeight+2+"px",s.o.style.textAlign="center",s.o.style.verticalAlign="baseline",s.x=parseInt(i(h-l.flakeWidth-20),10),s.y=parseInt(-1*i(d),10)-l.flakeHeight,s.refresh(),s.o.style.display="block",s.active=1},this.recycle(),this.refresh()},this.snow=function(){for(var e=0,t=null,o=n.flakes.length;o--;)1==n.flakes[o].active?(n.flakes[o].move(),e++):0===n.flakes[o].active?0:0,n.flakes[o].melting&&n.flakes[o].melt();e<n.flakesMaxActive&&0===(t=n.flakes[parseInt(i(n.flakes.length),10)]).active&&(t.melting=!0)},this.mouseMove=function(e){if(!n.followMouse)return!0;var t=parseInt(e.clientX,10);g=t<c?t/c*2-2:(t-=c)/c*2},this.createSnow=function(e,t){for(var s=0;s<e;s++)n.flakes[n.flakes.length]=new n.SnowFlake(n,parseInt(i(6),10)),(t||s>n.flakesMaxActive)&&(n.flakes[n.flakes.length-1].active=-1);o.targetElement.appendChild(p)},this.timerInit=function(){n.timers=r?[setInterval(n.snow,3*n.animationInterval),setInterval(n.snow,n.animationInterval)]:[setInterval(n.snow,n.animationInterval)]},this.init=function(){n.randomizeWind(),n.createSnow(n.flakesMax),e(window,"resize",n.resizeHandler),e(window,"scroll",n.scrollHandler),a||(e(window,"blur",n.freeze),e(window,"focus",n.resume)),n.resizeHandler(),n.scrollHandler(),n.followMouse&&e(document,"mousemove",n.mouseMove),n.animationInterval=Math.max(20,n.animationInterval),n.timerInit()};var E=!1;function F(){n.start(!0)}this.start=function(e){if(E){if(e)return!0}else E=!0;if("string"==typeof n.targetElement){var t=n.targetElement;if(n.targetElement=document.getElementById(t),!n.targetElement)throw new Error('Snowstorm: Unable to get targetElement "'+t+'"')}n.targetElement||(n.targetElement=s?document.body:document.documentElement?document.documentElement:document.body),n.targetElement!=document.documentElement&&n.targetElement!=document.body&&(n.resizeHandler=n.resizeHandlerAlt),n.resizeHandler(),n.usePositionFixed=n.usePositionFixed&&!m,w=n.usePositionFixed,h&&d&&!n.disabled&&(n.init(),n.active=!0)},document.addEventListener?(document.addEventListener("DOMContentLoaded",F,!1),window.addEventListener("load",F,!1)):e(window,"load",F)}snowStorm=new SnowStorm;
              
            
!
999px

Console