*{
	margin: 0px;
	padding: 0px;
}
body{
	background-color: #000;
}
a{
	text-decoration: none;
	position: absolute;
	left: 50%;
	top: 75%;
	transform: translate(-50%,-50%);
	font-size: 20px;
	background:linear-gradient(90deg,#03a9f4,#f441a5,#ffeb3b,#03a9f4);
	background-size: 400%;
	width: 300px;
	height: 100px;
	line-height: 100px;
	text-align: center;
	color: white;
	text-transform: uppercase;
	border-radius: 50px;
	z-index: 1;
	
}
a::before{
	content: "";
	position: absolute;
	left: -5px;
	right: -5px;
	bottom: -5px;
	top: -5px;
	background:linear-gradient(90deg,#03a9f4,#f441a5,#ffeb3b,#03a9f4);
	background-size: 400%;
	border-radius: 50px;
	filter: blur(20px);
	z-index: -1;
	
}
a:hover::before{
	animation: sun 8s infinite;
}

a:hover{
	animation: sun 8s infinite;
}


@keyframes  sun{
	100%{
		background-position: -400% 0;
	}
}