body {
background: linear-gradient(180deg, #fff, #000, #fff, #000);
background-size: 400% 400%;
animation: gradient 45s ease infinite;
height: 100vh;
}

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

.staticky {
width: 50vw;

}