add dithering to photos for more retro look

css/style.css

@@ -244,6 +244,13 @@ p {
   margin-bottom: 14px;
 }
 
+/* --- Palette-Dithered Photo Treatment --- */
+.figure img[src*="photos/"],
+.card-image[src*="photos/"] {
+  image-rendering: pixelated;
+  image-rendering: -moz-crisp-edges;
+}
+
 /* --- Images (DK Book Style) --- */
 .figure {
   margin: 24px 0;