--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/presentation/themes/blank/projection.css.less	Wed Jul 01 19:06:07 2015 +0900
@@ -0,0 +1,97 @@
+/*********************************
+ * CSS @media projection rules (not print or screen)
+ *
+ * 1) projection -> slideshow mode (display one slide at-a-time; hide all others)
+ * 2) screen     -> outline mode (display all slides-at-once on screen) 
+ * 3) print      -> print (and print preview)
+ *
+ * toggle between projection/screen (that is, slideshow/outline) mode using t-key
+ */
+
+//////////////////////////////////////
+// note: this is a less extendend css script, to learn more about less; see lesscss.org) 
+
+
+html,
+body,
+.presentation { margin: 0; padding: 0; }
+
+
+.slide { display: none;   /* note: only display current slide in projection mode */
+         position: absolute;
+         top: 0; left: 0; 
+         margin: 0;
+         padding: 2% 4% 0% 4%;         /* css note: order is => top right bottom left  */
+         -moz-box-sizing: border-box;
+         -webkit-box-sizing: border-box;
+         box-sizing: border-box;
+         width: 100%; height: 100%;    /* css note: lets use border-box; no need to add padding+border to get to 100% */
+         overflow-x: hidden; overflow-y: auto;
+         z-index: 2;
+       }
+
+.slide.current { display: block; }  /* note: only display current slide in projection mode */
+
+
+/*****
+ *  layout block structure:
+ *
+ *  .layout
+ *    > #header
+ *    > #footer
+ */
+
+.layout {
+  
+  #header, header {  position: fixed;
+                     top: 0; left: 0;
+                     width: 100%; height: 0.5em;
+                     z-index: 1;
+                   }
+   
+  #footer, footer {  position: fixed;
+           top: auto; bottom: 0;
+           padding: 1em 0;   /* css note: order is => 1st top,bottom; 2nd right,left */
+           width: 100%; height: 4em;
+           z-index: 5;
+    
+           /* todo: move font-size and font-style to blank.css */    
+           font-size: 100%; font-weight: bold; 
+ 
+           /* todo: move font-size and font-style to blank.css */
+
+           h1 { display: block; margin: 0; padding: 0 1em; font-size: 50%; }
+           h2 { display: block; margin: 0; padding: 0 1em; font-size: 50%; font-style: italic; }
+   }
+}
+
+
+
+/*********************************
+ * general text-alignment classes
+ */
+
+.left   { text-align: left;   }
+.center { text-align: center; }
+.right  { text-align: right;  }
+
+
+/*********************************
+ * general _absolute_ font-size classes
+ */
+
+.small    { font-size: 97%; }
+.x-small  { font-size: 88%; }
+.xx-small { font-size: 82%; }
+
+.large    { font-size: 103%; }
+.x-large  { font-size: 112%; }
+.xx-large { font-size: 118%; }
+
+/*********************************
+ * general _relative_ font-size classes
+ */
+ 
+.smaller  { font-size: 82%; }
+.larger   { font-size: 118%; }
+ 
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