more pdf-export tweaks, added slide describing the feature (#92)

css/print-pdf.css

@@ -15,7 +15,7 @@
 }
 
 body {
-	font-size: 20pt;
+	font-size: 22pt;
 	width: auto;
 	height: auto;
 	border: 0;
@@ -47,7 +47,7 @@ html {
 /* SECTION 3: Set body font face, size, and color.
    Consider using a serif font for readability. */
 body, p, td, li, div, a {
-	font-size: 20pt;
+	font-size: 22pt;
 }
 
 /* SECTION 4: Set heading font face, sizes, and color.
@@ -118,7 +118,7 @@ ul, ol, div, p {
 	left: 0%;
 	top: 0%;
 	margin-left: 0px;
-	margin-top: 15%;
+	margin-top: 50px;
 	padding: 20px 0px;
 
 	opacity: 1;
@@ -138,7 +138,8 @@ ul, ol, div, p {
 	display: block !important;
 }
 .reveal section.stack {
-	margin-top: 0% !important;
+	margin: 0px !important;
+	padding: 0px !important;
 	page-break-after: avoid !important; 
 }
 .reveal section .fragment {
@@ -146,4 +147,12 @@ ul, ol, div, p {
 }
 .reveal img {
 	box-shadow: none;
+}
+.reveal .roll {
+	overflow: visible;
+	line-height: 1em;
+}
+
+.reveal small a {
+	font-size: 16pt !important;
 }