<span>
<p><b><i>Blowy Snow</i></b></p>
</span>

body {
    background-image: radial-gradient(ellipse farthest-corner at center bottom, rgba(255,5,5,0.6) 5%, #000 100%);
    background-color:#000;
    background-size: 100% 100%;
    background-attachment: fixed;
}
span {
    display: inline-block;
    position: relative;
    padding: 4px;
    width: 200px;
    background-color: #770000;
    border-radius: 5px;
    font: 20px verdana;
    color: #fff; 
    text-align: center;
}
p {
    margin: 5px;
}

(function(){
    //Blowy Snow

    var flakeNum = 250;
    var pic = new Image(20,20);
    pic.src = "https://lenger.kz/uploads/web/png.webp";
    var d = document;
    var deg = 180/3.14;
    var rad = 3.14/180;
    var idx = (typeof d.getElementsByTagName != "undefined")?d.getElementsByTagName('div').length:0;
    var f = {w:0,h:0,cx:0,cy:0,flake:[],x:[],y:[],cutRight:[],cutLeft:[],dst:[],size:[],vel:[],acc:[],blo:[],rate:[],rng:[],ang:[],counter:[]}

    var con = d.createElement('div');
    con.setAttribute('style','display:block;'
    +'position:fixed;'
    +'height:100%;width:100%;'
    +'margin:auto;padding:0px;'
    +'top:0;left:0;left:0;right:0;'
    +'overflow:hidden;' 
    +'visibility:hidden;');
    d.body.appendChild(con);

    for (var i = 0; i < flakeNum; i++) {
        f.counter[i] = 0;
        var img = d.createElement('img');
        img.setAttribute('id','flake'+(idx+i));
        img.setAttribute('src',pic.src);
        img.setAttribute('style','display:none;'
        +'position:absolute;'
        +'transform: translate3d(0px,0px,0)'
        +'height:5vh;width:5vh;'
        +'visibility:visible;');
        con.appendChild(img);
    }

    function win() {
        var ddw = d.documentElement.clientWidth;
        var ddh = d.documentElement.clientHeight;
        var scrollBarRight = (typeof ddw == 'number') ? window.innerWidth - ddw : 0;
        var scrollBarBottom = (typeof ddh == 'number') ? window.innerHeight - ddh : 0;
        f.h = window.innerHeight - scrollBarBottom -1;
        f.w = window.innerWidth - scrollBarRight -1;
        f.cy = f.h/2|0;
        f.cx = f.w/2|0;
    }

    function rsz() {
        win();
        for (var i = 0; i < flakeNum; i++) {
            f.flake[i].style.display = 'none';
            f.counter[i] = 0;
            rst(i);
        }
    }
    window.addEventListener("resize", rsz, false);

    function rst(s) {
        if (f.counter[s] > 1) {
            f.flake[s].style.display = 'block';
        }
        if (f.counter[s] < 2) {
            f.counter[s]++;
        }
        f.cutLeft[s] = 0 + Math.random() * f.cx/2;
        f.cutRight[s] = f.w - Math.random() * f.cx/2;
        f.y[s] = 0 + Math.random() * f.h;
        f.x[s] = (f.cx - f.cx/3) + Math.random() * f.cx/1.5;
        f.rng[s] = f.cx-100 + Math.random() * 200;
        var dy = (f.y[s] - f.cy/6);
        var dx = (f.x[s] - f.rng[s]);
        f.ang[s] = Math.atan2(dy,dx) * deg;
        f.dst[s] = 5 + (Math.sqrt(dy*dy + dx*dx));
        f.size[s] = 0.1;
        f.acc[s] = 0; 
        f.blo[s] = 0;
        f.vel[s] = (1.8 * (f.dst[s] / 2) / 100);             
        f.rate[s] = (-0.01 + Math.random() * 0.02);
    }

    function animate() {
        for (var i = 0; i < flakeNum; i++){
            f.y[i] += f.vel[i] * Math.sin((f.ang[i]) * rad);
            f.x[i] += f.vel[i] * Math.cos((f.ang[i]+=f.blo[i]) * rad);
            f.acc[i] = (f.vel[i] / (f.dst[i] + (400 * f.vel[i] / 100)) * f.vel[i]);
            f.vel[i] += f.acc[i];
            f.size[i] += ((f.vel[i] * 0.6) / (190 * f.dst[i] / 100));
            f.blo[i] += f.rate[i];
            if (f.y[i] < -f.cy/2) {
                f.ang[i]  *= -1;
            }
            if (f.x[i]+f.size[i] < f.cutLeft[i] || f.x[i] > f.cutRight[i] || f.y[i] > f.h || f.x[i] > f.w || f.x[i]+f.size[i] < 0){
                rst(i);
            }
            f.flake[i].style.transform = 'translate3d('+f.x[i]+'px, '+f.y[i]+'px,0) scale('+f.size[i]+')';
        }
    }

    function run() {
        requestAnimationFrame(run);
        animate();
    }

    function init() {
        win();
        for (var i = 0; i < flakeNum; i++){
            f.flake[i] = d.getElementById("flake"+(idx+i));
            rst(i);
        }
        run();
    }
    window.addEventListener("load",init,false);

})();