.mydiv {
	clear:both;
	float:none;
	border-radius:20px;
	
	width: 70vw;
	height: 50vh;
	display: flex;
	justify-content: center;
	align-items: center;
	font-weight: bold;
	color:#CCC;
	background: linear-gradient(150deg, #fff102,  #f10271, #00c298);
	background-size: 400% 300%;
	animation: BgGradient 5s ease infinite;


}

@keyframes BgGradient {
    0% {background-position: 0% 50%;}
    50% {background-position: 100% 50%;}
    100% {background-position: 0% 50%;}
}