button {
	text-decoration:none;
	position:relative;
	border:none;
	font-size:14px;
	font-family:inherit;
	cursor:pointer;
	color:#fff;
	width:9em;
	height:3em;
	line-height:2em;
	text-align:center;
	background:linear-gradient(90deg,#03a9f4,#f441a5,#ffeb3b,#03a9f4);
	background-size:300%;
	border-radius:30px;
	z-index:1;
}
button:hover {
	animation:ani 8s linear infinite;
	border:none;
}
@keyframes ani {
	0% {
	background-position:0%;
}
100% {
	background-position:400%;
}
}button:before {
	content:"";
	position:absolute;
	top:-5px;
	left:-5px;
	right:-5px;
	bottom:-5px;
	z-index:-1;
	background:linear-gradient(90deg,#03a9f4,#f441a5,#ffeb3b,#03a9f4);
	background-size:400%;
	border-radius:35px;
	transition:1s;
}
button:hover::before {
	filter:blur(20px);
}
button:active {
	background:linear-gradient(32deg,#03a9f4,#f441a5,#ffeb3b,#03a9f4);
}