.firework {
	position: absolute;
}
.explosion {
	position: absolute;
	left: -2px;
	bottom: 0;
	width: 4px;
	height: 80px;
	transform-origin: 50% 100%;
	/* background-color: rgba(0,0,0,.2); */
	overflow: hidden;
}
.explosion:nth-child(1) {
	transform: rotate(0deg) translateY(-15px);
}
.explosion:nth-child(2) {
	transform: rotate(30deg) translateY(-15px);
}
.explosion:nth-child(3) {
	transform: rotate(60deg) translateY(-15px);
}
.explosion:nth-child(4) {
	transform: rotate(90deg) translateY(-15px);
}
.explosion:nth-child(5) {
	transform: rotate(120deg) translateY(-15px);
}
.explosion:nth-child(6) {
	transform: rotate(150deg) translateY(-15px);
}
.explosion:nth-child(7) {
	transform: rotate(180deg) translateY(-15px);
}
.explosion:nth-child(8) {
	transform: rotate(210deg) translateY(-15px);
}
.explosion:nth-child(9) {
	transform: rotate(240deg) translateY(-15px);
}
.explosion:nth-child(10) {
	transform: rotate(270deg) translateY(-15px);
}
.explosion:nth-child(11) {
	transform: rotate(300deg) translateY(-15px);
}
.explosion:nth-child(12) {
	transform: rotate(330deg) translateY(-15px);
}

.explosion::before {
	content: '';
	position: absolute;
	left: 0;
	right: 0;
	top: 100%;
	height: 40px;
	background-color: #ca346b;
}

#firework1 .explosion::before { 
    background-color: #ca346b;
}

#firework2 .explosion::before {
    background-color: #eaa82b;
}

#firework3 .explosion::before { 
    background-color: #12b3b2;  
}

@keyframes explosion {
	0% {
		top: 100%;
	}
	33%, 100% {
		top: -50%;
	}
}

#firework1 {
	left: 50%;
	top: 30%;
	transform: scale(1);
}
#firework1 .explosion::before {
	animation: explosion 2s ease-in-out infinite;
}

#firework2 {
	left: 40%;
	top: 25%;
	transform: scale(.7);
}
#firework2 .explosion::before {
	animation: explosion 2s .6s ease-in-out infinite;
}

#firework3 {
	left: 60%;
	top: 45%;
	transform: scale(.4);
}
#firework3 .explosion::before {
	animation: explosion 2s .4s ease-in-out infinite;
}