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                :root {
	--font: 1rem/1.2 "helvetica", sans-serif;
	--bg-hover: linear-gradient(
		#101ee7 0%,
		#2654e9 20%,
		#62d6fa 37%,
		#fff 50%,
		#fc35ca 66%,
		#7559ff 72%,
		#101ee7 100%
	--btn-color: #2e175e;

/* formating */
main {
	display: flex;
	width: 100%;
	height: 100vh;
	align-items: center;
	justify-content: center;

/* button */
.btn {
	display: table;
	text-align: center;
	color: #ffffff;
	text-decoration: none;
	position: relative;
	font: var(--font);
	font-weight: bold;
	padding: 22px 40px;
	background-color: var(--btn-color);
	overflow: hidden;
	margin: 24px;

.--animated {
	transition: all 1s;

.--animated span {
	position: relative;
	z-index: 9;

.--animated:after {
	height: 100%;
	width: 2000px;
	transition: all 1s;
	background: var(--bg-hover);

.--animated:before {
	height: 26px;
	width: 100%;
	top: -50px;
	z-index: 10;
	opacity: 0;
	background-color: rgba(255, 255, 255, 0.15);

.--animated:hover:before {
	top: 0;
	opacity: 1;
.--animated:hover:after {
	left: -1750px;
a:after {
	position: absolute;
	top: 0;
	left: 0;
	z-index: 7;
	display: block;
	content: "";
.--animated:active:before {
	height: 100%;
	background-color: rgba(255, 255, 255, 0.8);
.--animated:active {
	transform: scale(0.95);
	transition: all 200ms;