:root {
	--background: #222222;
	--primary: white;
	--secondary: gray;
}

html {
	width: 100%;
	overflow: hidden;
}

body {
	position: fixed;
	overflow-y: scroll;
	-webkit-overflow-scrolling: touch;
	width: 100%;
	height: 100%;
	margin: 0;
	background-color: var(--background);
	color: var(--primary);
}

a {
	color: yellow;
	text-decoration: none;
}
a:hover {
	color: orange;
}

.flex-column {
	display: flex;
	flex-direction: column;
	align-items: center;
}

.flex-row {
	display: flex;
	flex-direction: row;
	align-items: center;
}

.icon-button {
	--icon-size: 4em;
	border: none;
	background-color: transparent;
}
.icon-button > img {
	width: var(--icon-size);
	height: var(--icon-size);
	filter: invert(100%);
}