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HTML 

              
                <!-- 
autor: Marco Barría 
https://twitter.com/marco_bf
-->

<div class="cake">
  <div class="velas">
    <div class="fuego"></div>
    <div class="fuego"></div>
    <div class="fuego"></div>
    <div class="fuego"></div>
    <div class="fuego"></div>
  </div>
  <div class="cobertura"></div>
  <div class="bizcocho"></div>
  <h1>happy birthday!</h1>
  <p>Poly</p>
</div>
!

CSS 

              
                @import url(https://fonts.googleapis.com/css?family=Lato:300italic);

//////////////////////////////////////////// var

@D:100px; // Control diameter

///////////////////////////////////////////

html,
body{
  height:100%;
}

body{
  background: rgb(162,123,204);
  background: -moz-radial-gradient(center, ellipse cover,  rgba(162,123,204,1) 0%, rgba(108,82,153,1) 100%);
  background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,rgba(162,123,204,1)), color-stop(100%,rgba(108,82,153,1)));
  background: -webkit-radial-gradient(center, ellipse cover,  rgba(162,123,204,1) 0%,rgba(108,82,153,1) 100%);
  background: -o-radial-gradient(center, ellipse cover,  rgba(162,123,204,1) 0%,rgba(108,82,153,1) 100%);
  background: -ms-radial-gradient(center, ellipse cover,  rgba(162,123,204,1) 0%,rgba(108,82,153,1) 100%);
  background: radial-gradient(ellipse at center,  rgba(162,123,204,1) 0%,rgba(108,82,153,1) 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#a27bcc', endColorstr='#6c5299',GradientType=1 );
}

/* ============================================== POSITION
*/

.cake{
  position:absolute;
  top:50%; left:50%;
  margin-left:-(@D/2); margin-top:-(@D/2);
  width:@D; height:@D;
}

/* ============================================== BASE
*/

.cake:after{
  background:rgba(235,227,225,1);
  border-radius:@D;
  content:"";
  position:absolute;
  bottom:0; left:0;
  width:@D; height:@D/50;
}

.cake:before{

}

/* ============================================== Candle
*/

.velas{
  background:rgba(255,255,255,1);
  border-radius:100%;
  position:absolute;
  top:50%; left:50%;
  margin-left:-(@D/2)/20;
  margin-top:-(@D/2)/6;
  width:@D/20; height:@D/6;
}

.velas:after,
.velas:before{
  background:rgba(255,0,0,0.4);
  content:"";
  position:absolute;
  width:100%; height:@D/45;
}

.velas:after{
  top:25%; left:0;
}

.velas:before{
  top:45%; left:0;
}

/* ============================================== Fire
*/

.fuego{
  border-radius:100%;
  box-shadow:0 0 40px 10px rgba(248,233,209,0.2);
  position:absolute;
  top:-12px; left:50%;
  margin-left:-(@D/2)/15;
  //margin-top:-(@D/2)/10;
  width:@D/15; height:@D/8;
}

.fuego:nth-child(1){
  animation:fuego 2s infinite;
}

.fuego:nth-child(2){
  animation:fuego 1.5s infinite;
}

.fuego:nth-child(3){
  animation:fuego 1s infinite;
}

.fuego:nth-child(4){
  animation:fuego 0.5s infinite;
}

.fuego:nth-child(5){
  animation:fuego 0.2s infinite;
}

/* ============================================== Animation Fire
*/

@keyframes fuego{
  0%{
    background:rgba(254,248,97,0.5);
    transform:translateY(0) scale(1);
  }
  50%{
    background:rgba(255,50,0,0.1);
    transform:translateY(-(@D/5)) scale(0);
  }
  100%{
    background:rgba(254,248,97,0.5);
    transform:translateY(0) scale(1);
  }
}

/* ============================================== Frosting
*/

.cobertura{
  background:rgba(236,231,227,1);
  border-radius:@D/2;
  position:absolute;
  top:60%; left:50%;
  margin-left:-(@D/2)/1.8;
  margin-top:-(@D/2)/10;
  width:@D/1.8; height:@D/8;
  z-index:10;
}

.cobertura:after,
.cobertura:before{
  background:rgba(236,231,227,1);
  border-radius:@D;
  content:"";
  position:absolute;
  width:@D/20; height:@D/10;
}

.cobertura:after{
  top:@D/15; right:@D/7;
}

.cobertura:before{
  top:@D/10; right:@D/11;
}

/* ============================================== BIZCOCHO
*/

.bizcocho{
  background:rgba(109,56,38,1);
  position:absolute;
  bottom:0; left:50%;
  margin-left:-(@D/2)/2;
  width:@D/2; height:@D/3;
}

.bizcocho:after,
.bizcocho:before{
  background:rgba(236,231,227,0.6);
  content:"";
  position:absolute;
  width:100%; height:@D/20;
}

.bizcocho:after{
  top:30%; left:0;
}

.bizcocho:before{
  top:60%; left:0;
}

/* ============================================== TEXT
*/

h1,
p{
  font-family: 'Lato', sans-serif;
  font-weight: 300;
  font-style:italic;
  text-align:center;
  width:100%;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

h1{
  color:rgba(108,82,153,1);
  font-size:1em;
  margin-top:6.8em;
}

p{
  color:rgba(236,231,227,0.6);
  font-size:0.8em;
  line-height:2em;
}
!

JS
!
999px

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