update packages and add valign

scripts/reveal.js/css/theme/moon.scss

@@ -0,0 +1,52 @@
+/**
+ * Solarized Dark theme for reveal.js.
+ * Author: Achim Staebler
+ */
+
+// Load utils
+@use 'sass:color';
+@use 'template/mixins' as mixins;
+
+// Solarized colors by Ethan Schoonover
+$base03: #002b36;
+$base02: #073642;
+$base01: #586e75;
+$base00: #657b83;
+$base0: #839496;
+$base1: #93a1a1;
+$base2: #eee8d5;
+$base3: #fdf6e3;
+$yellow: #b58900;
+$orange: #cb4b16;
+$red: #dc322f;
+$magenta: #d33682;
+$violet: #6c71c4;
+$blue: #268bd2;
+$cyan: #2aa198;
+$green: #859900;
+
+$active-color: $blue;
+
+// Inject theme variables (with some overrides)
+@use 'template/settings' with (
+	$background-color: $base03,
+
+	$main-color: $base1,
+	$heading-color: $base2,
+
+	$link-color: $active-color,
+	$link-color-hover: color.scale($active-color, $lightness: 20%),
+	$selection-color: #fff,
+	$selection-background-color: $magenta
+);
+
+// Inject the theme template
+@use 'template/theme';
+
+// Include theme-specific fonts
+// Include theme-specific fonts
+@import url('./fonts/league-gothic/league-gothic.css');
+@import url('https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic');
+
+// Change text colors against light slide backgrounds
+@include mixins.light-bg-text-color(#222);