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HTML

              
                <div class="view">
        <canvas id="stars"></canvas>
        <div class="clouds">
            <div class="cloud_1"></div>
            <div class="cloud_2"></div>
            <div class="cloud_3"></div>
            <div class="cloud_4"></div>

            <div class="cloud_10"></div>
            <div class="cloud_11"></div>
            <div class="cloud_12"></div>
            <div class="cloud_13"></div>
            <div class="cloud_14"></div>
            <div class="cloud_15"></div>
            <div class="cloud_16"></div>
            <div class="cloud_17"></div>
            <div class="cloud_18"></div>
            <div class="cloud_19"></div>
            <div class="cloud_20"></div>
        </div>
        <div class="artwork">
            <div class="moon-glow"></div>
            <div class="moon"></div>
            <div class="elk"></div>
            <div class="land"></div>
        </div>
</div>

              
            
!

CSS

              
                html{
  box-sizing: border-box;
}
*,*::after,*::before{
  box-sizing: inherit;
  padding: 0;
  margin: 0;
}

body{
  background-color: #030F33;
  overflow-x: hidden;
  overflow-y: hidden;
  -webkit-overflow-scrolling: auto;
  }

$list: 5,4,3,2,1,2,3,4,5;
$size: 1,2,3,4,5,4,3,2,1;

@function list-remove($list, $index) {
  $newList: ();
  @for $i from 1 through length($list) {
    @if $i != $index {
      $newList: append($newList, nth($list,$i), comma);
    }
  }
  @return $newList;
}
@function cal_box_shadow($i){
  $x:null;
  @for $j from 1 to $i{
      $x: append($x, 0px 0px 0px nth($size,$j)*20px rgba(255, 255, 255, nth($list,$j)*0.02), comma);
      @if $j>5{
        $x: list-remove($x,10-$j+1)
      }
  }
  @return $x;
}

@-webkit-keyframes shine{
  @for $i from 1 to 10{
    $frame: (10*($i)) * 1%;
    #{$frame}{
      box-shadow: cal_box_shadow($i);
      z-index: -1000;
    }
  }
}

@-webkit-keyframes cloud_move_left {
  0%{
    transform: translateX(0) translateY(0);
  }
  50%{
    transform: translateY(-10px) translateX(-10px);
  }
  100%{
    transform: translateX(0) translateY(0);
  }
}

@-webkit-keyframes cloud_move_right {
  0%{
    transform: translateX(0) translateY(0);
  }
  50%{
    transform: translateY(10px) translateX(10px);
  }
  100%{
    transform: translateX(0) translateY(0);
  }
}
#stars{
  //background-color: black;
}

@mixin cloud {
  width: 350px;
  height: 120px;
  background: -webkit-gradient(linear, left top, left bottom, color-stop(11%, #022f5c), to(#013669));
  background: -webkit-linear-gradient(top, #022f5c 11%, #013669 100%);
  background: -o-linear-gradient(top, #022f5c 11%, #013669 100%);
  background: linear-gradient(top, #022f5c 11%, #013669 100%);
  box-shadow: 0 37px 64px -40px #000;
  border-radius: 100px;
  position: absolute;
  margin: 120px auto 20px;

  &:after, &:before {
    content: '';
    position: absolute;
    background: #022F5C;
    z-index: -11;
    box-shadow: 0px -5px 136px -40px #000;
  }
  &:after {
    width: 100px;
    height: 100px;
    top: -50px;
    left: 50px;
    border-radius: 100px;
  }
  &:before {
    width: 180px;
    height: 180px;
    top: -90px;
    right: 50px;
    border-radius: 200px;
  }
}

.clouds{
  position: relative;
  top: -210px;
  left: -210px;
  bottom: 0px;
  @for $y from 1 to 20{
    & .cloud_#{$y}{
      @include cloud;
      top:50px;
      left: random(120)+$y*0.1vmax;
      transition: all 0.2s ease-in-out;
      @if $y%2 ==0 {
        animation: cloud_move_right 10.0s 1s infinite;
      }@else{
        animation: cloud_move_left 10.0s 1s infinite;
      }

    }
  }
}

.artwork {
  position: relative;
  top: -453px;
  min-width: 529px;
  & .moon-glow {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 118px auto;
    background-color: white;
    border-radius: 50%;
    top: -53px;
    box-shadow: 0 0 64px 0 rgba(255, 255, 255, 0.41);
  }
  & .moon {
    width: 400px;
    height: 400px;
    margin: 118px auto;
    background-color: white;
    border-radius: 50%;
    transition: all 0.2s ease-in-out;
    position: relative;
    top: -570px;
    animation: shine 16.0s 1s infinite;
  }
  & .land {
    border-radius: 46%;
    position: relative;
    width: 666px;
    height: 239px;
    background-color: #030f33;
    top: -1022px;
    margin: 20px auto;
    &:before {
      //content: '';
      //height: 100px;
      //width: 370px;
      //background: rgba(88, 88, 6, 0);
      //position: absolute;
      //border-radius: 50%;
      //z-index: -100;
      //top: -11px;
      //left: 152px;
      //box-shadow: 0px -37px 38px 5px #ffffff;
    }
    &:after {
      content: '';
      height: 183px;
      width: 855px;
      background: #030f33;
      position: absolute;
      top: 61px;
      margin: 0 auto;
      border-radius: 1000px 1000px 0px 0px;
      left: -92px;
    }
  }
  & .elk {
    position: relative;
    top: -970px;
    left: -3px;
    width: 171px;
    margin: 10px auto;
    height: 209px;
    background: url(http://res.cloudinary.com/imshubhamsingh/image/upload/v1506311817/elk_ntzxuz.png) no-repeat;
    background-size: 190px;
  }
}
              
            
!

JS

              
                  var canvas = document.getElementById("stars");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;

var c = canvas.getContext('2d');

window.addEventListener('resize',function () {
    canvas.width = window.innerWidth;
    canvas.height = window.innerHeight;
    makingStar();
});
function rand(a,b) {
    return Math.random()*(b-a+1)+a;
}
var stars = [];

Stars = function(x, y, radius, speed){
    this.x = x;
    this.y = y;
    this.speed = (speed/25);
    this.radius = radius;
    this.saturation = (95+(this.radius)*5);
    this.lightness = (20+this.radius*4);
};

Stars.prototype = {
    update: function(){
        this.x += this.speed;
        if(this.x - this.radius >= window.innerWidth){
            this.x = 0;
        }
    },
    render: function(){
        c.beginPath();
        c.arc(this.x, this.y, (this.radius < 0) ? 0 : this.radius, 0, Math.PI *2, false);
        var flickerAdd = (rand(0, 140) !== 0) ? rand(5, 20) : 0;
        c.fillStyle = 'hsl('+Math.floor(rand(195,200))+', '+this.saturation+'%, '+(this.lightness+flickerAdd)+'%)';
        c.fill();
    }
};

updateStars = function(a){
    var i = a.length;
    while(i--){
        a[i].update();
    }
};
renderStars = function(a){
    var i = a.length;
    while(i--){
        a[i].render(i);
    }
};

makingStar = function(){
    stars = [];
    var base = .75;
    var inc = .2;
    var count = 40;
    var per = 6;
    while(count--){
        var radius = base + inc;
        var perTime = per;
        while(perTime--){
            radius += inc;
            stars.push(new Stars(rand(0, window.innerWidth-radius), rand(0, window.innerHeight-radius), radius, radius*3));
        }
    }
};

function update() {
    window.requestAnimationFrame(update);
    updateStars(stars);
    c.clearRect(0, 0, window.innerWidth, window.innerHeight);
    renderStars(stars);
}

makingStar();
update();
              
            
!
999px

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