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HTML 

              
                input(type='radio' name='metal' id='gold' checked)
label(for='gold') GOLD
input(type='radio' name='metal' id='silver')
label(for='silver') SILVER
input(type='radio' name='metal' id='bronze')
label(for='bronze') BRONZE
div.container
	div.rings
		- for (var x = 1; x < 6; x++) 
			div.ring
				- for (var y = 1; y < 21; y++) 
					span
	div.rings
		- for (var x = 1; x < 6; x++) 
			div.ring
!

CSS 

              
                /*** debug in progress ***/

$metals: (gold, silver, bronze);

:root {
	--metal: #ffffff45;
	--gold:   repeating-conic-gradient(#edc800 0deg, #ffe800 15deg, #f3cf00 30deg, #e3b600 45deg, #edc800 60deg) 10% 10%;
	--silver: repeating-conic-gradient(#c3c3c3 0deg, #cccccc 15deg, #c6c6c6 30deg, #d7d7d7 45deg, #c3c3c3 60deg) 10% 10%;
	--bronze: repeating-conic-gradient(#d96b41 0deg, #b15a39 15deg, #b25b3a 30deg, #d26645 45deg, #d96b41 60deg) 10% 10%;
	/*--bronze: repeating-conic-gradient(#d95641 0deg, #b14439 15deg, #b2453a 30deg, #d25645 45deg, #d95641 60deg) 10% 10%;*/
	--m-gold: #ffcc00;
	--m-silver: #e9e9e9;
	--m-bronze: #fb8248 /*#ff6f59*/;
	--ring-clip: polygon(100% 50%, 100% 100%, 0px 100%, 0px 0px, 100% 0px, 100% 50%, 90% 50%, 89.8012% 46.0173%, 89.2069% 42.0742%, 88.2229% 38.2098%, 86.859% 34.4626%, 85.1289% 30.8698%, 83.0496% 27.4672%, 80.6418% 24.2885%, 77.9295% 21.3653%, 74.9396% 18.7267%, 71.7019% 16.399%, 68.2484% 14.4051%, 64.6136% 12.7651%, 60.8336% 11.495%, 56.9459% 10.6077%, 52.9892% 10.1118%, 49.0028% 10.0124%, 45.0263% 10.3104%, 41.0992% 11.0029%, 37.2605% 12.0829%, 33.5485% 13.5398%, 30% 15.359%, 26.6503% 17.5225%, 23.5326% 20.0088%, 20.6779% 22.7931%, 18.1147% 25.8478%, 15.8684% 29.1426%, 13.9612% 32.6447%, 12.4123% 36.3192%, 11.2369% 40.1297%, 10.4468% 44.0383%, 10.0497% 48.0062%, 10.0497% 51.9938%, 10.4468% 55.9617%, 11.2369% 59.8703%, 12.4123% 63.6808%, 13.9612% 67.3553%, 15.8684% 70.8574%, 18.1147% 74.1522%, 20.6779% 77.2069%, 23.5326% 79.9912%, 26.6503% 82.4775%, 30% 84.641%, 33.5485% 86.4602%, 37.2605% 87.9171%, 41.0992% 88.9971%, 45.0263% 89.6896%, 49.0028% 89.9876%, 52.9892% 89.8882%, 56.9459% 89.3923%, 60.8336% 88.505%, 64.6136% 87.2349%, 68.2484% 85.5949%, 71.7019% 83.601%, 74.9396% 81.2733%, 77.9295% 78.6347%, 80.6418% 75.7115%, 83.0496% 72.5328%, 85.1289% 69.1302%, 86.859% 65.5374%, 88.2229% 61.7902%, 89.2069% 57.9258%, 89.8012% 53.9827%, 90% 50%);
	/*** 
	polygon for the ring by @strangerintheq from stackoverflow: 	
	https://stackoverflow.com/questions/37000558/clip-path-inset-circle
	***/
}

body {
	margin: 0;
	width: 100vw;
	height: 100vh;
	& * { 
		box-sizing: border-box; 
	}
}

.container {
	width: 100vw;
	height: 100vh;
	overflow: hidden;
	position: absolute;
	left: 0;
	top: 0;
	display: flex;
	justify-content: center;
	align-items: center;
	background-image: linear-gradient(11deg, #000000 0%, #2c3e50 75%);
	perspective: 100vmin;
	padding-bottom: 10vh;
}

.rings {
  width: 100vmin;
	display: flex;
  justify-content: center;
  align-items: center;
	transform-style: preserve-3d;
	transform: rotateY(45deg);
	animation: spin1 1.75s ease 0s 1, spin2 4.575s ease-in-out 1.75s infinite alternate;
	position: absolute;
	&:hover, 
	&:hover + .rings, 
	&:hover .ring:before {
			animation-play-state: paused;
	}
	+ .rings {
    filter: drop-shadow(0px 0px 1.5vmin black) brightness(0) blur(1.5vmin) opacity(0.35);
    animation: shadow1 1.75s ease 0s 1, shadow2 4.575s ease-in-out 1.75s infinite alternate;
    z-index: -1;
	}
}


.ring {
	width: 30vmin;
	height: 30vmin;
	border-radius: 100%;
	transform: translate3d(-31vmin, -8vmin, 0) ;
	transform-style: preserve-3d;
	position: absolute;
	box-shadow: 0 0 0.1vmin 0.15vmin var(--metal), 0 0 0.1vmin 0.15vmin var(--metal) inset;
	&:before, &:after {
    content: "";
    width: 100%;
    height: 100%;
    position: absolute;
    background: 
			radial-gradient(circle at 20% 15%, #ffffffcc 5%, #ffffff40 7%, transparent 13%), 
			radial-gradient(circle at 80% 85%, #ffffffcc 5%, #ffffff40 7%, transparent 13%);
    border-radius: 100%;
    animation: shine 5s ease-in-out 2s infinite alternate;
    transform: rotate(0deg) translate3d(0,0,0.1vmin);
    filter: blur(7px);
	}
	&:after {
    clip-path: var(--ring-clip);
		background: var(--metal);
		filter: none;
		animation: none;
		transform: translate3d(0,0,0.09vmin);
	}
	& span {
    width: 100%;
    height: 100%;
    position: absolute;
    border-radius: 100%;
    transform: translateZ(-1px);
    filter: brightness(0.75);
    background: var(--metal);
    clip-path: var(--ring-clip);
	}
	&:nth-child(2) { transform: translate3d(-15vmin, 8vmin, 0); }
	&:nth-child(3) { transform: translate3d(0, -8vmin, 0); }
	&:nth-child(4) { transform: translate3d(16vmin, 8vmin, 0); }
	&:nth-child(5) { transform: translate3d(31vmin, -8vmin, 0); }
}


@keyframes spin1 {
	  0% { transform: rotateY(0deg)}
	100% { transform: rotateY(420deg)}
}

@keyframes spin2 {
	  0% { transform: rotateY(60deg)}
	100% { transform: rotateY(-60deg)}
}

@keyframes shadow1 {
	  0% { transform: rotateY(0deg) rotateX(30deg) translateZ(-30vmin) translateY(-10vmin)}
	100% { transform: rotateY(420deg) rotateX(30deg) translateZ(-30vmin) translateY(-10vmin)}
}

@keyframes shadow2 {
	  0% { transform: rotateY(60deg) rotateX(30deg) translateZ(-30vmin) translateY(-10vmin)}
	100% { transform: rotateY(-60deg) rotateX(30deg) translateZ(-30vmin) translateY(-10vmin)}
}

@keyframes shine {
	  0% { transform: rotate(0deg) translate3d(0,0,0.1vmin); }
	100% { transform: rotate(80deg) translate3d(0,0,0.1vmin); }
}


@for $i from 1 through 20 {
	.ring span {
		&:nth-child(#{$i}) {
    	transform: translateZ(-#{$i}px);
			@if $i == 20 {
				filter: none;
   		}
		}
	}
}


input { display: none; }

label {
	width: 10vmin;
	height: 10vmin;
	position: absolute;
	z-index: 3;
	bottom: 8vmin;
	transform: translateX(calc(50vw - 5vmin));
	border-radius: 100%;
	filter: contrast(0.75) sepia(0.65) opacity(0.75);
	cursor: pointer;
	text-align: center;
	font-family: Arial, Helvetica, sans-serif;
	display: flex;
	justify-content: center;
	align-items: center;
	font-size: 1.5vmin;
	padding-bottom: 2.5vmin;
	color: #00000060;
	transition: all 0.5s ease 0s;
	font-weight: bold;
	border: 0.75vmin solid #00000020;
	&:before, &:after {
		content: "";
		width: 1.25vmin;
		height: 1.25vmin;
		position: absolute;
		border-radius: 100%;
		border: 0.25vmin solid #00000050;
		filter: 
			drop-shadow(1.85vmin 0 0 black) 
			drop-shadow(0.925vmin 0.75vmin 0 black);
		margin-left: -3.5vmin;
		margin-top: 5vmin;
	}
	&:after {
		filter: none;
		margin-left: 3.5vmin;
	}
	&[for=gold] {
		background: var(--gold);
		box-shadow: 0 0.75vmin 0.1vmin 0 #846900;
		margin-left: -15vmin;
	}
	&[for=silver] {
		background: var(--silver);
		box-shadow: 0 0.75vmin 0.1vmin 0 #808080;
	}
	&[for=bronze] {
		background: var(--bronze);
		box-shadow: 0 0.75vmin 0.1vmin 0 #6d2821;
		margin-left: 15vmin;
	}
}

input:checked + label, input + label:hover {
	filter: none;
	transition: all 0.5s ease 0s;
	border-color: #00000040;
	transform: translateX(calc(50vw - 5vmin)) translateY(1vmin);
	box-shadow: 
		0 0 0.15vmin 0.15vmin #000, 
		-0.5vmin -0.5vmin 1vmin 0vmin #ffffff20, 
		0.5vmin 0.5vmin 1vmin 0vmin #000000, 
		0.5vmin 0.5vmin 1vmin 0vmin #000000;
}

@each $color in $metals {
	input##{$color}:checked ~ .container  {
		--metal: var(--#{$color});
		@if $color == bronze {
			& .ring:before {
				background: 
					radial-gradient(circle at 20% 15%, #ffb8ae82 5%, #ff7b7b40 7%, transparent 13%), 
					radial-gradient(circle at 80% 85%, #ffb8ae82 5%, #ff7b7b40 7%, transparent 13%);
			}
   	}
	}
	input##{$color}:checked + label {
    box-shadow: 
			0 0 0.15vmin 0.15vmin #000, 
			-0.5vmin -0.5vmin 1vmin 0vmin #ffffff20, 
			0.5vmin 0.5vmin 1vmin 0vmin #000000, 
			0.5vmin 0.5vmin 1vmin 0vmin #000000, 
			-0.5vmin -0.5vmin 3vmin 0vmin var(--m-#{$color});
	}
}

@media only screen and (orientation: portrait) {
	
	label {
		width: 20vmin;
		height: 20vmin;
		position: absolute;
		z-index: 3;
		bottom: 8vmin;
		transform: translateX(calc(50vw - 10vmin));
		font-size: 2.5vmin;
		padding-bottom: 6vmin;
		&:before, &:after {
			content: "";
			width: 3vmin;
			height: 3vmin;
			position: absolute;
			border-radius: 100%;
			border: 0.5vmin solid #00000050;
			filter: 
				drop-shadow(4vmin 0 0 black) 
				drop-shadow(2vmin 2vmin 0 black);
			margin-left: -8vmin;
			margin-top: 12vmin;
		}
		&:after {
			filter: none;
			margin-left: 8vmin;
		}
	}

	input:checked + label, input + label:hover {
		transform: translateX(calc(50vw - 10vmin)) translateY(1vmin);
	}
	
	label[for=gold] { margin-left: -25vmin; }
	label[for=bronze] { margin-left: 25vmin; }
	
}
!

JS
!
999px

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