header {
	position: fixed;
	top: 0; left: 0;

	width: 100%; height: 100%;

	display: flex;
	justify-content: center;
}

.logo {
	z-index: 1;
	display: block;

	position: relative;
	top: 0; height: 100%;
}

.logo img {
	position: relative;
	top: 5%; left: 5%;
	width: 90%; height: 90%;
}