Understanding how a candle flame is created in a simple SVG - html

Question

I was just looking at a simple SVG cake animation HERE , the CSS code looks like so:
#import url(http://fonts.googleapis.com/css?family=Lato:300italic);
html,
body {
width: 100%;
height: 100%;
}
body {
background: #ee9ca7;
}
#cake {
display: block;
position: relative;
margin: -10em auto 0 auto;
}
*/* ============================================== Candle
*/
.velas {
background: #ffffff;
border-radius: 10px;
position: absolute;
top: 228px;
left: 50%;
margin-left: -2.4px;
margin-top: -8.33333333px;
width: 5px;
height: 35px;
transform: translateY(-300px);
backface-visibility: hidden;
animation: in 500ms 6s ease-out forwards;
}
.velas:after,
.velas:before {
background: rgba(255, 0, 0, 0.4);
content: "";
position: absolute;
width: 100%;
height: 2.22222222px;
}
.velas:after {
top: 25%;
left: 0;
}
.velas:before {
top: 45%;
left: 0;
}
/* ============================================== Fire
*/
.fuego {
border-radius: 100%;
position: absolute;
top: -20px;
left: 50%;
margin-left: -2.6px;
width: 6.66666667px;
height: 18px;
}
.fuego:nth-child(1) {
animation: fuego 2s 6.5s infinite;
}
.fuego:nth-child(2) {
animation: fuego 1.5s 6.5s infinite;
}
.fuego:nth-child(3) {
animation: fuego 1s 6.5s infinite;
}
.fuego:nth-child(4) {
animation: fuego 0.5s 6.5s infinite;
}
.fuego:nth-child(5) {
animation: fuego 0.2s 6.5s infinite;
}
/* ============================================== Animation Fire
*/
#keyframes fuego {
0%, 100% {
background: rgba(254, 248, 97, 0.5);
box-shadow: 0 0 40px 10px rgba(248, 233, 209, 0.2);
transform: translateY(0) scale(1);
}
50% {
background: rgba(255, 50, 0, 0.1);
box-shadow: 0 0 40px 20px rgba(248, 233, 209, 0.2);
transform: translateY(-20px) scale(0);
}
}
#keyframes in {
to {
transform: translateY(0);
}
}
.text {
color: #8b6a60;
font-family: 'Lato', sans-serif;
font-weight: 300;
font-style:italic;
text-align: center;
h1 {
font-size: 1.4em;
}
}
After inspecting the code a bit i came to know the candle flame was caused by this set of HTML elements:
<div class="velas">
<div class="fuego"></div>
<div class="fuego"></div>
<div class="fuego"></div>
<div class="fuego"></div>
<div class="fuego"></div>
</div>
And this HTML has the following CSS code:
background: #ffffff;
border-radius: 10px;
position: absolute;
top: 228px;
left: 50%;
margin-left: -2.4px;
margin-top: -8.33333333px;
width: 5px;
height: 35px;
transform: translateY(-300px);
backface-visibility: hidden;
animation: in 500ms 6s ease-out forwards;
}
.velas:after,
.velas:before {
background: rgba(255, 0, 0, 0.4);
content: "";
position: absolute;
width: 100%;
height: 2.22222222px;
}
.velas:after {
top: 25%;
left: 0;
}
.velas:before {
top: 45%;
left: 0;
}
/* ============================================== Fire
*/
.fuego {
border-radius: 100%;
position: absolute;
top: -20px;
left: 50%;
margin-left: -2.6px;
width: 6.66666667px;
height: 18px;
}
.fuego:nth-child(1) {
animation: fuego 2s 6.5s infinite;
}
.fuego:nth-child(2) {
animation: fuego 1.5s 6.5s infinite;
}
.fuego:nth-child(3) {
animation: fuego 1s 6.5s infinite;
}
.fuego:nth-child(4) {
animation: fuego 0.5s 6.5s infinite;
}
.fuego:nth-child(5) {
animation: fuego 0.2s 6.5s infinite;
}
/* ============================================== Animation Fire
*/
#keyframes fuego {
0%, 100% {
background: rgba(254, 248, 97, 0.5);
box-shadow: 0 0 40px 10px rgba(248, 233, 209, 0.2);
transform: translateY(0) scale(1);
}
50% {
background: rgba(255, 50, 0, 0.1);
box-shadow: 0 0 40px 20px rgba(248, 233, 209, 0.2);
transform: translateY(-20px) scale(0);
}
}
#keyframes in {
to {
transform: translateY(0);
}
}
Now i don't see the CSS code that is actually cauing the red and yellow flame , i beleive the white shadow is caused by the very high box shadow given in the animations , but somehow i don't see where the candle flame is created , can somebody guide me as to where the candle flame is really created ?

Answer 1

The colors are set by RGB values. There's a yellow, red, and some pink.
#keyframes fuego {
0%, 100% {
background: rgba(254, 248, 97, 0.5); /* yellow */
box-shadow: 0 0 40px 10px rgba(248, 233, 209, 0.2); /* pink */
transform: translateY(0) scale(1);
}
50% {
background: rgba(255, 50, 0, 0.1); /* red */
box-shadow: 0 0 40px 20px rgba(248, 233, 209, 0.2); /* pink again */
transform: translateY(-20px) scale(0);
}
}
Timings to change the colors are set in .fuego:nth-child(1) through .fuego:nth-child(6)