style.css

body {
	background: black;
	overflow: hidden;
	color: white;
	--color-spark: peru;
}

#sparkler {
	position: absolute;
	left: 50%;
	top: 50%;
	width: 1px;
	height: 1px;
	transform: rotate(-25deg);
	border-radius: 50%;
	box-shadow: 0 0 2500px 100px var(--color-spark);
}
#sparkler:before {
	content: '';
	width: 10px;
	height: 25vh;
	background: linear-gradient(to right, dimgray, silver);
	position: absolute;
	top: 0;
	left: 0;
	border-radius: 1rem;
}
#sparkler:after {
	content: '';
	width: 4px;
	height: 25vh;
	background: linear-gradient(to right, dimgray, gray);
	position: absolute;
	top: calc(25vh - 1px);
	left: 3px;
/* 	border-radius: 1rem; */
}

.particle {
	height: 5px;
	border-radius: 50%;
	background: linear-gradient(to right, transparent, var(--color-spark), white, var(--color-spark), transparent);
	box-shadow: 0 0 30px var(--color-spark);
	position: absolute;
	transition: .5s linear;
	z-index: 100;
}