header {
	align-items: center;
	background-color: var(--main-bgt-color);
	backdrop-filter: blur(20px) saturate(1);
	box-shadow: var(--shadow-strong);
		-webkit-box-shadow: var(--shadow-strong);
	color: var(--main-txt-color);
	display: flex;
	float: none;
	font-size: 1em;
	height: 2.5em;
	justify-content: space-between;
	line-height: 2.5em;
	padding: 0 5px;
	position: fixed;
	top: 0;
	transition: var(--transition-slow);
	width: calc(100% - 10px);
	z-index: 300;
}

footer {
	align-items: center;
	background-color: transparent;
	bottom: 0em;
	color: var(--main-txt-color);
	display: flex;
	float: none;
	font-size: 0.8em;
	height: 2em;
	justify-content: space-between;
	line-height: 2em;
	padding: 0 5px;
	position: fixed;
	width: calc(100% - 10px);
	z-index: 900;
	mix-blend-mode: difference;
	color: var(--main-bg-color);
}

main {
	align-items: center;
	background-image: url("../img/bg_fertigung_blur.png");
	background-repeat: no-repeat;
	background-size: cover;
	background-position: center center;
	display: flex;
	height: 100%;
	min-height: 100vh;
	justify-content: center;
	left: 0;
	position: absolute;
	text-align: center;
	transition: var(--transition-fast);
	vertical-align: middle;
	width: 100%;
}