updated sass to include margin fix for figure elements

sass/elements/_elements.scss

@@ -35,4 +35,8 @@ img {
 	max-width: 100%; /* Adhere to container width. */
 }
 
+figure {
+	margin: 1em 0; /* Extra wide images within figure tags don't overflow the content area. */
+}
+
 @import "tables";