.spa {
	display: flex;
	flex-direction: column;
	height: 100vh;
	height: 100svh;
	overflow: hidden;
}
.spa .centered {
    text-align: center;
}
.spa > .content {
	flex-grow: 1;
	overflow-y: scroll;
	overflow-x: hidden;
	margin: 0;
	scroll-behavior: smooth;
	scrollbar-width: none;
	-ms-overflow-style: none;
}
.spa > .content::-webkit-scrollbar {
	width: 0;
	height: 0;
	background: transparent;
	display: none;
}
.spa .page {
	height: 100%;
	width: 100%;
	position: relative;
}
.spa .page:nth-child(even) {
	background-color: rgba(255,255,255,0.1);
}
.spa .page > div {
	position: absolute;
	top: 45%;
	left: 50%;
	/* transform: -1000px -50vh; */
	translate: -50% -50%;
	display: inline-block;
    max-height: 85%;
}
.spa .page.centered > div {
    width: 90%;
}
.spa .page .controls {
	position: absolute;
	top: unset;
	bottom: 10px;
	translate: -50% 0%;
}
.spa .page .controls img {
	height: 65px;
	width: 65px;
	cursor: pointer;
	-webkit-user-drag: none;
    -moz-user-drag: none;
    user-drag: none;
	transition: all 0.2s;
	padding: 20px;
}
.spa .page .controls img:hover {
	scale: 1.5;
}
.spa .page .controls img:active {
	scale: 1.1;
}

.spa .page .subtitle {
    font-size: 0.8em;
    opacity: 0.8;
    font-style: italic;
}
.spa .page .pop {
    margin-top: 0.25em;
    margin-bottom: 0.25em;
    font-size: 1.5em;
}
.spa .page .pop.long {
	font-size: 1.2em;
}
.spa .page .pop.longer {
	font-size: 1em;
}
.spa .page .pop.longest {
	font-size: 0.5em;
}
.spa .page .extra {
    margin-top: 1.75em;
    font-size: 0.8em;
}
.spa .page .extra * {
    opacity: 0.8;
}
.spa .page .extra .pop {
    opacity: 1;
}