CodePen Embed - CSSspark

<body>
    <div class="fire-on"></div>
  
    <div class="switch-wrap">
    <div id="switch">
      <div id="circle"></div>
    </div>
    </div>
  
    <div class="name">CSS<span>spark</span></div>
  
  <div class="section-center">
    <div class="moon">
      <div></div>
      <div></div>
      <div></div>
    </div>
    <div class="shooting-star"></div>
    <div class="shooting-star-2"></div>
    <div class="star"></div>
    <div class="star snd"></div>
    <div class="star trd"></div>
    <div class="star fth"></div>
    <div class="star fith"></div>
    <div class="circle"></div>
    <div class="wood-circle"></div>
    <div class="wood"></div>
    <div class="tree-1"></div>
    <div class="tree-2"></div>
    <div class="fire">
      <span></span>
      <span></span>
      <span></span>
    </div>
    <div class="smoke">
      <span class="s-0"></span>
      <span class="s-1"></span>
      <span class="s-2"></span>
      <span class="s-3"></span>
      <span class="s-4"></span>
      <span class="s-5"></span>
      <span class="s-6"></span>
      <span class="s-7"></span>
      <span class="s-8"></span>
      <span class="s-9"></span>
    </div>
  </div>
    <!-- Link to page
  ================================================== -->

  <a href="https://themeforest.net/user/ig_design/portfolio"      class="link-to-portfolio cursor-link" target=”_blank”       ></a>
</body>


/* ======================================== * 
        BEST VIEWED FULLSCREEN
   https://codepen.io/ig_design/full/NeRxzj
 * ======================================== */

@import url('https://fonts.googleapis.com/css?family=Poppins:400,500,600,700,800,900');
@import url('https://fonts.googleapis.com/css?family=Dancing+Script');

body{
  width: 100%;
  display: block;
  overflow: hidden;
  height: 100vh;
  background: linear-gradient(#0a171d, #000);
  font-family: 'Poppins', sans-serif;
}
.fire-on{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(#1d4456, #112630);
  opacity: 1;
  z-index: 1;
  -webkit-transition: all 1200ms linear;
  transition: all 1200ms linear; 
}
.name{
  position: absolute;
  bottom: -10px;
  left: -50%;
  width: 200%;
  opacity: 1;
  z-index: 2;
  font-size: 17vw;
  line-height: 1;
  font-weight: 700;
  text-align: center;
  background: linear-gradient(rgba(100,100,100,0), rgba(100,100,100,0.2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.name span{
  font-family: 'Dancing Script', cursive;
  font-weight: 400;
}
.switch-wrap {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 200;
    transform: translateX(-50%);
  margin-top: 200px;
  -webkit-transition: all 500ms linear;
  transition: all 500ms linear; 
}
#switch,
#circle {
  height: 31px;
  cursor: pointer;
  -webkit-transition: all 0.4s cubic-bezier(0.54, 1.6, 0.5, 1);
    transition: all 0.4s cubic-bezier(0.54, 1.6, 0.5, 1);
} 
#switch {
  width: 60px;
  margin: 0 auto;
  border: 2px solid #fec22a;
  border-radius: 27px;
  background: #ff9400;
  position: relative;
  display: inline-block;
  margin: 0 20px;
    transform: translateY(10px);
}
#circle {
  margin-top: 5%;
  margin-left: 5%;
  width: 40%;
  height: 80%;
  border-radius: 50%;
  box-shadow: 0 4px 4px rgba(26,53,71,0.25), 0 0 0 1px rgba(26,53,71,0.07);
  background: #e9e5d5;
}
.switched {
  border-color: #777 !important;
  background: #000 !important;
}
.switched #circle {
  margin-left: 55%;
  background: #e9e5d5;
}
.section-center{
  position: relative;
  width: 400px;
  height: 400px;
  top: 50%;
  left: 50%;
  display: block;
  overflow: hidden;
  border: 10px solid rgba(0,0,0,.2);
  border-radius: 50%;
  z-index: 5;
  background-color: #1d4456;
  box-shadow: 0 0 50px 5px rgba(255,148,0,.1);
  transform: translate(-50%, -50%);
}
.wood {
  position: absolute;
  z-index: 21;
  left: 50%; 
  bottom: 12%;
  width: 100px;
  margin-left: -50px;
  height: 36px;
  background-image: url('https://ivang-design.com//svg-load/air/wood.png');
  background-size: 100px 36px;
}
.wood-circle {
  position: absolute;
  z-index: 20;
  left: 50%; 
  bottom: 11%;
  width: 120px;
  margin-left: -60px;
  height: 26px;
  border-radius: 100%;
  background-color: #0a171d;
}
.circle {
  position: absolute;
  z-index: 6;
  right: -300px; 
  bottom: -450px;
  width: 750px;
  height: 700px;
  border-radius: 100%;
  background-color: #112630;
}
.moon{
  position: absolute;
  top: 50px;
  left: 115px;
  width: 80px;
  display: block;
  height: 80px;
  background-color: #b2b7bc;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 
    inset -20px 2px 0 0px #c0c3c9,
        0 0 10px 5px rgba(228,228,222,.4);
  z-index: 1;
  animation: brilla-moon 4s alternate infinite;
}
.moon div:nth-child(1) {
  position: absolute;
  top: 50%;
  left: 10%;
  width: 12%;
  height: 12%;
  border-radius: 50%;
  border: 1px solid #adaca2;
  border-radius: 50%;
  box-shadow: inset 2px -1px 0 0px #85868b;
  opacity: 0.4;
}
.moon div:nth-child(2) {
  position: absolute;
  top: 20%;
  left: 38%;
  width: 16%;
  height: 16%;
  border-radius: 50%;
  border: 1px solid #adaca2;
  border-radius: 50%;
  box-shadow: inset 2px -1px 0 0px #85868b;
  opacity: 0.4;
}
.moon div:nth-child(3) {
  position: absolute;
  top: 60%;
  left: 45%;
  width: 20%;
  height: 20%;
  border-radius: 50%;
  border: 1px solid #adaca2;
  border-radius: 50%;
  box-shadow: inset 2px -1px 0 0px #85868b;
  opacity: 0.4;
}
.moon{
  -webkit-transition: all 2000ms linear;
  transition: all 2000ms linear; 
}
@keyframes brilla-moon{
  0%{
  box-shadow: 
    inset -20px 2px 0 0px #c0c3c9,
        0 0 10px 5px rgba(228,228,222,.4);
  }
  50%{
  box-shadow:
    inset -20px 2px 0 0px #c0c3c9,
        0 0 15px 8px rgba(228,228,222,.4);
  }
}
.shooting-star {
  z-index: 2;
  width: 1px;
  height: 50px;
  border-bottom-left-radius: 50%;
  border-bottom-right-radius: 50%;
  position: absolute;
  top: 0;
  left: -70px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0), white);
  animation: animShootingStar 6s linear infinite;
  -webkit-transition: all 2000ms linear;
  transition: all 2000ms linear; 
}
@keyframes animShootingStar {
  from {
    transform: translateY(0px) translateX(0px) rotate(-45deg);
    opacity: 1;
    height: 5px;
  }
  to {
    transform: translateY(1280px) translateX(1280px) rotate(-45deg);
    opacity: 1;
    height: 800px;
  }
}
.shooting-star-2 {
  z-index: 2;
  width: 1px;
  height: 50px;
  border-bottom-left-radius: 50%;
  border-bottom-right-radius: 50%;
  position: absolute;
  top: 0;
  left: 200px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0), white);
  animation: animShootingStar-2 9s linear infinite;
  -webkit-transition: all 2000ms linear;
  transition: all 2000ms linear; 
}
@keyframes animShootingStar-2 {
  from {
    transform: translateY(0px) translateX(0px) rotate(-45deg);
    opacity: 1;
    height: 5px;
  }
  to {
    transform: translateY(1920px) translateX(1920px) rotate(-45deg);
    opacity: 1;
    height: 800px;
  }
}
.star {
  z-index: 2;
  position: absolute;
  top: 185px;
  left: 25px;
  background-image: url('https://ivang-design.com//svg-load/air/star.png');
  background-size: 15px 15px;
  width: 15px;
  height: 15px;
  opacity: 0.4;
  animation: starShine 3.5s linear infinite;
  -webkit-transition: all 1200ms linear;
  transition: all 1200ms linear; 
}
.star.snd {
  top: 100px;
  left: 310px;
  animation-delay: 1s;
}
.star.trd {
  top: 130px;
  left: 100px;
  animation-delay: 1.4s;
}
.star.fth {
  top: 20px;
  left: 200px;
  animation-delay: 1.8s;
}
.star.fith {
  top: 85px;
  left: 220px;
  animation-delay: 2.2s;
}
@keyframes starShine {
  0% {
    transform: scale(0.3) rotate(0deg);
    opacity: 0.4;
  }
  25% {
    transform: scale(1) rotate(360deg);
    opacity: 1;
  }
  50% {
    transform: scale(0.3) rotate(720deg);
    opacity: 0.4;
  }
  100% {
    transform: scale(0.3) rotate(0deg);
    opacity: 0.4;
  }
}
.tree-1 {
  position: relative;
  top: 150px;
  left: 50px;
    width: 0;
    height: 0;
  z-index: 8;
  display: block;
    border-bottom: 90px solid #0a171d;
    border-left: 30px solid transparent;
    border-right: 30px solid transparent;
}
.tree-1:before {
  position: absolute;
  bottom: -110px;
  left: 50%;
  margin-left: -4px;
    width: 8px;
  display: block;
    height: 30px;
  z-index: 7;
    content: '';
  background-color: #000;
}
.tree-2 {
  position: relative;
  top: 0;
  left: 250px;
    width: 0;
    height: 0;
  z-index: 8;
  display: block;
    border-bottom: 90px solid #0a171d;
    border-left: 30px solid transparent;
    border-right: 30px solid transparent;
}
.tree-2:before {
  position: absolute;
  bottom: -110px;
  left: 50%;
  margin-left: -4px;
    width: 8px;
  display: block;
    height: 30px;
  z-index: 7;
    content: '';
  background-color: #000;
}
.fire {
  position: absolute;
  z-index: 39;
  width: 2px;
  margin-left: -1px;  
  left: 50%; 
  bottom: 80px;
  -webkit-transition: all 1200ms linear;
  transition: all 1200ms linear; 
}
.fire span { 
  display: block;
  position: absolute;
  bottom: -15px; 
  margin-left:-20px;
  height: 0px; width: 0px;
  border: 30px solid #febd08;
  border-radius: 50%;
  border-top-left-radius: 0;
  left: -9px; 
  box-shadow: 
    0 0 10px 5px rgba(244,110,28,0.8),
    0 0 20px 10px rgba(244,110,28,0.6),
    0 0 30px 15px rgba(244,110,28,0.3);
  transform: scale(0.45, 0.75) rotate(45deg);
  animation: brilla-fire 2.5s alternate infinite;
  z-index: 9;
  -webkit-transition: all 1200ms linear;
  transition: all 1200ms linear; 
}
.fire span:after { 
  display: block;
  position: absolute;
  bottom: -30px; 
  content: '';
  margin-left: -5px;
  height: 30px; 
  width: 12px;
  background-color: rgba(244,110,28,0.7);
  border-radius: 80px;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  box-shadow: 
    0 0 20px 10px rgba(244,110,28,0.7);
  left: -9px; 
  opacity: 0.8;
  transform: rotate(-50deg);
}
.fire span:nth-child(2) { 
  left: -22px; 
  transform: scale(0.3, 0.55) rotate(15deg);
  z-index: 8;
  animation: brilla-fire 1.5s alternate infinite;
}
.fire span:nth-child(3) { 
  left: 4px; 
  transform: scale(0.3, 0.55) rotate(80deg);
  z-index: 8;
  animation: brilla-fire 2s alternate infinite;
}
@keyframes brilla-fire{
  0%, 100%{
  box-shadow: 
    0 0 10px 5px rgba(244,110,28,0.8),
    0 0 20px 10px rgba(244,110,28,0.6),
    0 0 30px 15px rgba(244,110,28,0.3);
  }
  50%{
  box-shadow: 
    0 0 14px 7px rgba(244,110,28,0.8),
    0 0 28px 14px rgba(244,110,28,0.6),
    0 0 42px 21px rgba(244,110,28,0.3);
  }
}
.smoke {
  position: absolute;
  z-index: 40;
  width: 2px;
  margin-left: -1px;  
  left: 50%; 
  bottom: 106px;
  opacity: 0;
  -webkit-transition: all 800ms linear;
  transition: all 800ms linear; 
}
.smoke span { 
  display: block;
  position: absolute;
  bottom: -35px; 
  left: 50%; 
  margin-left:-20px;
  height: 0px; width: 0px;
  border: 30px solid rgba(0, 0, 0, .6);
  border-radius: 22px;
  border-bottom-left-radius: 0;
  border-top-right-radius: 0;
  left: -9px; 
  opacity: 0;
  transform: scale(0.2, 0.2) rotate(-45deg);
}
@keyframes smokeLeft {
  0%   { transform: scale(0.2, 0.2) translate(0, 0) rotate(-45deg) }
  10%  { opacity: 1; transform: scale(0.2, 0.3) translate(0, -5px) rotate(-45deg) }
  60%  { opacity: 0.6; transform: scale(0.3, 0.5) translate(-10px, -80px) rotate(-45deg) }
  100% { opacity: 0; transform: scale(0.4, 0.8) translate(-20px, -120px) rotate(-45deg) }
}
@keyframes smokeRight {
  0%   { transform: scale(0.2, 0.2) translate(0, 0) rotate(-45deg) }
  10%  { opacity: 1; transform: scale(0.2, 0.3) translate(0, -5px) rotate(-45deg) }
  60%  { opacity: 0.6; transform: scale(0.3, 0.5) translate(10px, -80px) rotate(-45deg) }
  100% { opacity: 0; transform: scale(0.4, 0.8) translate(20px, -120px) rotate(-45deg) }
}
.smoke .s-0 { 
  animation: smokeLeft 7s 0s infinite 
}
.smoke .s-1 { 
  animation: smokeRight 7s 0.7s infinite 
}
.smoke .s-2 { 
  animation: smokeLeft 7s 1.4s infinite 
}
.smoke .s-3 { 
  animation: smokeRight 7s 2.1s infinite 
}
.smoke .s-4 { 
  animation: smokeLeft 7s 2.8s infinite 
}
.smoke .s-5 { 
  animation: smokeRight 7s 3.5s infinite 
}
.smoke .s-6 { 
  animation: smokeLeft 7s 4.2s infinite 
}
.smoke .s-7 { 
  animation: smokeRight 7s 4.9s infinite 
}
.smoke .s-8 { 
  animation: smokeLeft 7s 5.6s infinite 
}
.smoke .s-9 { 
  animation: smokeRight 7s 6.3s infinite 
}

/* #Switched
================================================== */

body.fire-off .fire-on{
  opacity: 0;
}
.section-center{
  -webkit-transition: all 500ms linear;
  transition: all 500ms linear; 
}
body.fire-off .section-center{
  box-shadow: 0 0 50px 5px rgba(200,200,200,.2);
}
body.fire-off .smoke{
  opacity: 1;
  transition-delay: 0.8s;
}
body.fire-off .fire span { 
  bottom: -35px;
  left: -9px; 
  transform: scale(0.15, 0.15) rotate(45deg);
}

/* #Link to page
================================================== */

.link-to-portfolio {
    position: fixed;
    top: 30px;
    right: 30px;
    z-index: 20;
    cursor: pointer;
    width: 40px;
    height: 40px;
    text-align: center;
    border-radius: 3px;
    background-position: center center;
    background-size: cover;
    background-image: url('https://ivang-design.com/ig-logo.jpg');
    box-shadow: 0 0 0 2px rgba(255,255,255,.1);
    transition: opacity .2s, border-radius .2s, box-shadow .2s;
    transition-timing-function: ease-out;
}
.link-to-portfolio:hover {
    opacity: 0.8;
    border-radius: 50%;
    box-shadow: 0 0 0 20px rgba(255,255,255,.1);
}

  $("#switch").on('click', function () {
    if ($("body").hasClass("fire-off")) {
      $("body").removeClass("fire-off");
      $("#switch").removeClass("switched");
    }
    else {
      $("body").addClass("fire-off");
      $("#switch").addClass("switched");

    }
  });

This Pen is owned by Ivan Grozdic on CodePen.

See more by @ig_design on CodePen

External CSS

https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css

External CSS

External JavaScript