client/css/background.css

.background-gradient:nth-child(1) {
	--top: 0;
	--right: 0;
	--size: 70vw;
	--blur: calc(0.5 * var(--size));
	--opacity: 0.3;
	animation: zoom_gradient 6s infinite;
}

.background-gradient {
	position: absolute;
	z-index: -1;
	border-radius: calc(0.5 * var(--size));
	background-color: var(--accent);
	background: radial-gradient(circle at center, var(--accent), var(--accent));
	width: 70vw;
	height: 70vw;
	top: 50%;
	right: 0;
	transform: translateY(-50%);
	filter: blur(calc(0.5 * 70vw)) opacity(var(--opacity));
}