docs/_style/prism-master/plugins/previewers/prism-previewers.css
.prism-previewer,
.prism-previewer:before,
.prism-previewer:after {
	position: absolute;
	pointer-events: none;
}
.prism-previewer,
.prism-previewer:after {
	left: 50%;
}
.prism-previewer {
	margin-top: -48px;
	width: 32px;
	height: 32px;
	margin-left: -16px;

	opacity: 0;
	-webkit-transition: opacity .25s;
	-o-transition: opacity .25s;
	transition: opacity .25s;
}
.prism-previewer.flipped {
	margin-top: 0;
	margin-bottom: -48px;
}
.prism-previewer:before,
.prism-previewer:after {
	content: '';
	position: absolute;
	pointer-events: none;
}
.prism-previewer:before {
	top: -5px;
	right: -5px;
	left: -5px;
	bottom: -5px;
	border-radius: 10px;
	border: 5px solid #fff;
	box-shadow: 0 0 3px rgba(0, 0, 0, 0.5) inset, 0 0 10px rgba(0, 0, 0, 0.75);
}
.prism-previewer:after {
	top: 100%;
	width: 0;
	height: 0;
	margin: 5px 0 0 -7px;
	border: 7px solid transparent;
	border-color: rgba(255, 0, 0, 0);
	border-top-color: #fff;
}
.prism-previewer.flipped:after {
	top: auto;
	bottom: 100%;
	margin-top: 0;
	margin-bottom: 5px;
	border-top-color: rgba(255, 0, 0, 0);
	border-bottom-color: #fff;
}
.prism-previewer.active {
	opacity: 1;
}

.prism-previewer-angle:before {
	border-radius: 50%;
	background: #fff;
}
.prism-previewer-angle:after {
	margin-top: 4px;
}
.prism-previewer-angle svg {
	width: 32px;
	height: 32px;
	-webkit-transform: rotate(-90deg);
	-moz-transform: rotate(-90deg);
	-ms-transform: rotate(-90deg);
	-o-transform: rotate(-90deg);
	transform: rotate(-90deg);
}
.prism-previewer-angle[data-negative] svg {
	-webkit-transform: scaleX(-1) rotate(-90deg);
	-moz-transform: scaleX(-1) rotate(-90deg);
	-ms-transform: scaleX(-1) rotate(-90deg);
	-o-transform: scaleX(-1) rotate(-90deg);
	transform: scaleX(-1) rotate(-90deg);
}
.prism-previewer-angle circle {
	fill: transparent;
	stroke: hsl(200, 10%, 20%);
	stroke-opacity: 0.9;
	stroke-width: 32;
	stroke-dasharray: 0, 500;
}

.prism-previewer-gradient {
	background-image: linear-gradient(45deg, #bbb 25%, transparent 25%, transparent 75%, #bbb 75%, #bbb), linear-gradient(45deg, #bbb 25%, #eee 25%, #eee 75%, #bbb 75%, #bbb);
	background-size: 10px 10px;
	background-position: 0 0, 5px 5px;

	width: 64px;
	margin-left: -32px;
}
.prism-previewer-gradient:before {
	content: none;
}
.prism-previewer-gradient div {
	position: absolute;
	top: -5px;
	left: -5px;
	right: -5px;
	bottom: -5px;
	border-radius: 10px;
	border: 5px solid #fff;
	box-shadow: 0 0 3px rgba(0, 0, 0, 0.5) inset, 0 0 10px rgba(0, 0, 0, 0.75);
}

.prism-previewer-color {
	background-image: linear-gradient(45deg, #bbb 25%, transparent 25%, transparent 75%, #bbb 75%, #bbb), linear-gradient(45deg, #bbb 25%, #eee 25%, #eee 75%, #bbb 75%, #bbb);
	background-size: 10px 10px;
	background-position: 0 0, 5px 5px;
}
.prism-previewer-color:before {
	background-color: inherit;
	background-clip: padding-box;
}

.prism-previewer-easing {
	margin-top: -76px;
	margin-left: -30px;
	width: 60px;
	height: 60px;
	background: #333;
}
.prism-previewer-easing.flipped {
	margin-bottom: -116px;
}
.prism-previewer-easing svg {
	width: 60px;
	height: 60px;
}
.prism-previewer-easing circle {
	fill: hsl(200, 10%, 20%);
	stroke: white;
}
.prism-previewer-easing path {
	fill: none;
	stroke: white;
	stroke-linecap: round;
	stroke-width: 4;
}
.prism-previewer-easing line {
	stroke: white;
	stroke-opacity: 0.5;
	stroke-width: 2;
}

@-webkit-keyframes prism-previewer-time {
	0% {
		stroke-dasharray: 0, 500;
		stroke-dashoffset: 0;
	}
	50% {
		stroke-dasharray: 100, 500;
		stroke-dashoffset: 0;
	}
	100% {
		stroke-dasharray: 0, 500;
		stroke-dashoffset: -100;
	}
}

@-o-keyframes prism-previewer-time {
	0% {
		stroke-dasharray: 0, 500;
		stroke-dashoffset: 0;
	}
	50% {
		stroke-dasharray: 100, 500;
		stroke-dashoffset: 0;
	}
	100% {
		stroke-dasharray: 0, 500;
		stroke-dashoffset: -100;
	}
}

@-moz-keyframes prism-previewer-time {
	0% {
		stroke-dasharray: 0, 500;
		stroke-dashoffset: 0;
	}
	50% {
		stroke-dasharray: 100, 500;
		stroke-dashoffset: 0;
	}
	100% {
		stroke-dasharray: 0, 500;
		stroke-dashoffset: -100;
	}
}

@keyframes prism-previewer-time {
	0% {
		stroke-dasharray: 0, 500;
		stroke-dashoffset: 0;
	}
	50% {
		stroke-dasharray: 100, 500;
		stroke-dashoffset: 0;
	}
	100% {
		stroke-dasharray: 0, 500;
		stroke-dashoffset: -100;
	}
}

.prism-previewer-time:before {
	border-radius: 50%;
	background: #fff;
}
.prism-previewer-time:after {
	margin-top: 4px;
}
.prism-previewer-time svg {
	width: 32px;
	height: 32px;
	-webkit-transform: rotate(-90deg);
	-moz-transform: rotate(-90deg);
	-ms-transform: rotate(-90deg);
	-o-transform: rotate(-90deg);
	transform: rotate(-90deg);
}
.prism-previewer-time circle {
	fill: transparent;
	stroke: hsl(200, 10%, 20%);
	stroke-opacity: 0.9;
	stroke-width: 32;
	stroke-dasharray: 0, 500;
	stroke-dashoffset: 0;
	-webkit-animation: prism-previewer-time linear infinite 3s;
	-moz-animation: prism-previewer-time linear infinite 3s;
	-o-animation: prism-previewer-time linear infinite 3s;
	animation: prism-previewer-time linear infinite 3s;
}