--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/slides/blanc.css.less.back	Mon Feb 03 08:40:32 2014 +0900
@@ -0,0 +1,110 @@
+////////
+// variables for easy configuration
+//
+// (note: this is a less extendend css script, to learn more about less; see lesscss.org)
+
+@color:                  black;
+@color-step-hidden:      silver;
+
+@background-color-code:  azure;
+
+// -- gradient colors used for slides classified with cover | title
+
+@background-gradient-color1-cover: blue;
+@background-gradient-color2-cover: aqua;
+
+// -- gradient colors for all other slides
+
+@background-gradient-color1: yellow;
+@background-gradient-color2: orange;
+
+// --- font size
+
+@font-size-h1:     245%;    // 30pt / 40px    (assuming 100% => 12pt / 16px)
+@font-size-h2:     230%;    // 28pt / 37px
+@font-size-h3:     200%;    // 24pt / 32px
+@font-size-text:   150%;    // 18pt / 24px
+@font-size-code:   140%;    // 16pt / 22px
+
+
+/////////////////////////////
+
+body { font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;  }
+
+a:link,
+a:visited { color: @color; }
+
+
+.slide {
+
+  color: @color;
+  
+  h1 {   font-size: @font-size-h1;
+         text-align: center;
+
+       &.fullscreen { position: absolute;
+                      top: 40%;
+                      width: 100%; }
+
+       // lets you create slides with no heading (that is, heading gets hidden but included in toc) 
+       &.hidden     { display: none; }
+      }
+  
+  h2 { font-size: @font-size-h2; }
+
+  h3 { font-size: @font-size-h3; }
+
+  .stepcurrent { color: @color; }
+  .step        { color: @color-step-hidden; }  // or hide next steps e.g. .step { visibility: hidden; } 
+}
+
+
+ul { list-style-type: square; }
+
+
+p, li, dt, dd, td, th { font-size: @font-size-text; }
+
+
+pre { font-size: @font-size-code; }
+
+.code { 
+        background-color: @background-color-code;
+        padding: 5px;
+      }
+     
+.footnote a:first-of-type  { text-decoration: none; }
+
+p.footnote { font-size: 88%; }
+
+.help {
+  p, td  { font-size: 88%; }
+}
+ 
+/******** 
+ * example gradient background using css3
+ */
+
+.slide {
+  background-image: -webkit-linear-gradient(top, @background-gradient-color1,
+                                                 @background-gradient-color2,
+                                                 @background-gradient-color1,
+                                                 @background-gradient-color2);
+  
+  background-image: -moz-linear-gradient(top, @background-gradient-color1,
+                                              @background-gradient-color2,
+                                              @background-gradient-color1,
+                                              @background-gradient-color2);
+                                              
+  &.cover, &.title {
+   background-image: -webkit-linear-gradient(top, @background-gradient-color1-cover,
+                                                 @background-gradient-color2-cover,
+                                                 @background-gradient-color1-cover,
+                                                 @background-gradient-color2-cover);
+  
+   background-image: -moz-linear-gradient(top, @background-gradient-color1-cover,
+                                              @background-gradient-color2-cover,
+                                              @background-gradient-color1-cover,
+                                              @background-gradient-color2-cover);
+
+  }
+}
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