diff --git a/customize.dist/src/less/mixins.less b/customize.dist/src/less/mixins.less
index 8765d7925..456adf9b2 100644
--- a/customize.dist/src/less/mixins.less
+++ b/customize.dist/src/less/mixins.less
@@ -23,8 +23,11 @@
 .top-left(@s: 5px) { border-top-left-radius: @s; }
 
 .size (@n) {
-    font-size: @n * 1vw;
-    line-height: @n * 1.1vw;
+    // font-size: @n * 1vmin;
+    // line-height: @n * 1.1vmin;
+    font-size: @n * 10%;
+    // line-height: @n * 11%;
+    line-height: 110%;
 }
 
 .two-part-gradient (@start, @end) {
diff --git a/www/slide/main.js b/www/slide/main.js
index 23ef2e338..50f216e56 100644
--- a/www/slide/main.js
+++ b/www/slide/main.js
@@ -137,6 +137,17 @@ define([
             var $modal = $pad.contents().find('#modal');
             var $content = $pad.contents().find('#content');
             var $print = $pad.contents().find('#print');
+            $( window ).resize(function() {
+                // 20vh
+                // 20 * 16 / 9vw
+                if ($(window).width() > 16/9*$(window).height()) {
+                    $content.css('font-size', '20vh');
+                    // $print.css('font-size', '20vh');
+                    return;
+                }
+                $content.css('font-size', (20*9/16)+'vw');
+                // $print.css('font-size', (20*9/16)+'vw');
+            });
 
             Slide.setModal($modal, $content, $pad, ifrw, initialState);
 
diff --git a/www/slide/slide.css b/www/slide/slide.css
index 17fd941eb..e96b77a44 100644
--- a/www/slide/slide.css
+++ b/www/slide/slide.css
@@ -44,7 +44,7 @@ body .CodeMirror-focused .cm-matchhighlight {
 @media print {
   @page {
     margin: 0;
-    size: auto;
+    size: landscape;
   }
   body {
     display: block;
@@ -63,86 +63,106 @@ body .CodeMirror-focused .cm-matchhighlight {
     max-height: none;
     overflow: visible;
   }
-  html #print {
+  html .cp #print {
     display: block;
     visibility: visible;
   }
-  html #print * {
+  html .cp #print * {
     visibility: visible;
   }
 }
-#print {
+.cp {
+  /* Slide position (print mode) */
+  /* Slide position (present mode) */
+  /* Slide content */
+}
+.cp #print {
   position: relative;
   display: none;
+  font-size: 11.25vw;
 }
-#print .slide-frame {
-  display: flex !important;
-  justify-content: center;
-  align-items: center;
-  flex-flow: column;
-  padding: 5vh 0;
-  height: 100vh;
-  width: 100%;
+.cp #print .slide-frame {
+  display: block !important;
+  padding: 2.5%;
+  margin-top: calc((100vh - 56.25vw)/2);
+  border-top: 1px solid black;
+  border-bottom: 1px solid black;
+  height: 56.25vw;
+  width: 100vw;
   page-break-after: always;
   position: relative;
   box-sizing: border-box;
 }
-#print .slide-frame li {
+.cp #print .slide-frame li {
   min-width: 50vw;
 }
-#print .slide-frame h1 {
+.cp #print .slide-frame h1 {
   padding-top: 0;
 }
-#print .slide-frame .slideNumber {
+.cp #print .slide-frame .slideNumber {
   position: absolute;
   right: 5vh;
   bottom: 5vh;
+  font-size: 15px;
 }
-#print .slide-frame .slideDate {
+.cp #print .slide-frame .slideDate {
   position: absolute;
   left: 5vh;
   bottom: 5vh;
+  font-size: 15px;
 }
-#print .slide-frame .slideTitle {
+.cp #print .slide-frame .slideTitle {
   position: absolute;
   top: 5vh;
   left: 0px;
   right: 0px;
   text-align: center;
+  font-size: 15px;
+}
+.cp div.modal,
+.cp div#modal {
+  /* Navigation buttons */
+  box-sizing: border-box;
+  z-index: 9001;
+  position: fixed;
+  top: 0px;
+  left: 0px;
+  width: 100%;
+  height: 100vh;
+  display: none;
+  background-color: #000;
 }
-.cp.slide #modal .button {
+.cp div.modal .button,
+.cp div#modal .button {
   position: absolute;
   cursor: pointer;
   font-size: 30px;
   opacity: 0.6;
   display: none;
 }
-.cp.slide #modal .button:hover {
+.cp div.modal .button:hover,
+.cp div#modal .button:hover {
   opacity: 1;
   display: block !important;
 }
-.cp.slide #modal #button_exit {
+.cp div.modal #button_exit,
+.cp div#modal #button_exit {
   left: 20px;
   top: 20px;
   z-index: 9001;
 }
-.cp.slide #modal #button_left {
+.cp div.modal #button_left,
+.cp div#modal #button_left {
   left: 6vw;
   bottom: 10vh;
 }
-.cp.slide #modal #button_right {
+.cp div.modal #button_right,
+.cp div#modal #button_right {
   right: 6vw;
   bottom: 10vh;
 }
-.cp.slide #modal #content h1,
-.cp.slide #modal #content h2,
-.cp.slide #modal #content h3,
-.cp.slide #modal #content h4,
-.cp.slide #modal #content h5,
-.cp.slide #modal #content h6 {
-  text-align: center;
-}
-.cp.slide #modal.shown {
+.cp div.modal.shown,
+.cp div#modal.shown {
   display: block;
   position: fixed;
   top: 0px;
@@ -153,43 +173,23 @@ body .CodeMirror-focused .cm-matchhighlight {
   height: 100vh;
   width: 100%;
 }
-.cp.slide #modal #content p,
-.cp.slide #modal #content ul,
-.cp.slide #modal #content ol {
-  font-size: 26px;
-}
-.cp.slide #modal #content img {
-  position: relative;
-  min-width: 1%;
-  max-width: 90%;
-  max-height: 90%;
-  margin: auto;
-}
-.cp div.modal,
-.cp div#modal {
-  box-sizing: border-box;
-  z-index: 9001;
-  position: fixed;
-  top: 0px;
-  left: 0px;
-  width: 100%;
-  height: 100vh;
-  display: none;
-  background-color: #000;
-}
 .cp div.modal #content,
 .cp div#modal #content {
+  font-size: 20vh;
+}
+.cp div.modal #content .slide-frame,
+.cp div#modal #content .slide-frame {
   box-sizing: border-box;
   border: 1px solid white;
   vertical-align: middle;
-  padding: 2.5vw;
   /* center things as much as possible
 
-            margin-top: 50vh;
-            margin-bottom: 50vh;
-            transform: translateY(-50%);
+                margin-top: 50vh;
+                margin-bottom: 50vh;
+                transform: translateY(-50%);
 
-        */
+            */
+  padding: 2.5%;
   width: 100vw;
   height: 56.25vw;
   max-height: 100vh;
@@ -201,80 +201,6 @@ body .CodeMirror-focused .cm-matchhighlight {
   left: 0;
   right: 0;
 }
-.cp div.modal #content p,
-.cp div#modal #content p,
-.cp div.modal #content li,
-.cp div#modal #content li,
-.cp div.modal #content pre,
-.cp div#modal #content pre,
-.cp div.modal #content code,
-.cp div#modal #content code {
-  font-size: 2.75vw;
-  line-height: 3.025vw;
-}
-.cp div.modal #content h1,
-.cp div#modal #content h1 {
-  font-size: 5vw;
-  line-height: 5.5vw;
-}
-.cp div.modal #content h2,
-.cp div#modal #content h2 {
-  font-size: 4.2vw;
-  line-height: 4.62vw;
-}
-.cp div.modal #content h3,
-.cp div#modal #content h3 {
-  font-size: 3.6vw;
-  line-height: 3.96vw;
-}
-.cp div.modal #content h4,
-.cp div#modal #content h4 {
-  font-size: 3vw;
-  line-height: 3.3vw;
-}
-.cp div.modal #content h5,
-.cp div#modal #content h5 {
-  font-size: 2.2vw;
-  line-height: 2.42vw;
-}
-.cp div.modal #content h6,
-.cp div#modal #content h6 {
-  font-size: 1.6vw;
-  line-height: 1.76vw;
-}
-.cp div.modal #content h1,
-.cp div#modal #content h1,
-.cp div.modal #content h2,
-.cp div#modal #content h2,
-.cp div.modal #content h3,
-.cp div#modal #content h3,
-.cp div.modal #content h4,
-.cp div#modal #content h4,
-.cp div.modal #content h5,
-.cp div#modal #content h5,
-.cp div.modal #content h6,
-.cp div#modal #content h6 {
-  color: inherit;
-  text-align: center;
-}
-.cp div.modal #content pre > code,
-.cp div#modal #content pre > code {
-  display: block;
-  position: relative;
-  border: 1px solid #333;
-  width: 90%;
-  margin: auto;
-  padding-left: .25vw;
-}
-.cp div.modal #content ul,
-.cp div#modal #content ul,
-.cp div.modal #content ol,
-.cp div#modal #content ol {
-  min-width: 50%;
-  max-width: 100%;
-  display: table;
-  margin: 0 auto;
-}
 .cp div.modal .center,
 .cp div#modal .center {
   position: relative;
@@ -288,35 +214,130 @@ body .CodeMirror-focused .cm-matchhighlight {
 .cp div#modal.shown {
   display: block;
 }
-.cp div.modal table,
-.cp div#modal table {
-  margin: 30px;
-  border-collapse: collapse;
+.cp div#modal #content .slide-frame p,
+.cp #print .slide-frame p,
+.cp div#modal #content .slide-frame li,
+.cp #print .slide-frame li,
+.cp div#modal #content .slide-frame pre,
+.cp #print .slide-frame pre,
+.cp div#modal #content .slide-frame code,
+.cp #print .slide-frame code {
+  font-size: 27.5%;
+  line-height: 110%;
+}
+.cp div#modal #content .slide-frame p p,
+.cp #print .slide-frame p p,
+.cp div#modal #content .slide-frame li p,
+.cp #print .slide-frame li p,
+.cp div#modal #content .slide-frame pre p,
+.cp #print .slide-frame pre p,
+.cp div#modal #content .slide-frame code p,
+.cp #print .slide-frame code p,
+.cp div#modal #content .slide-frame p li,
+.cp #print .slide-frame p li,
+.cp div#modal #content .slide-frame li li,
+.cp #print .slide-frame li li,
+.cp div#modal #content .slide-frame pre li,
+.cp #print .slide-frame pre li,
+.cp div#modal #content .slide-frame code li,
+.cp #print .slide-frame code li,
+.cp div#modal #content .slide-frame p pre,
+.cp #print .slide-frame p pre,
+.cp div#modal #content .slide-frame li pre,
+.cp #print .slide-frame li pre,
+.cp div#modal #content .slide-frame pre pre,
+.cp #print .slide-frame pre pre,
+.cp div#modal #content .slide-frame code pre,
+.cp #print .slide-frame code pre,
+.cp div#modal #content .slide-frame p code,
+.cp #print .slide-frame p code,
+.cp div#modal #content .slide-frame li code,
+.cp #print .slide-frame li code,
+.cp div#modal #content .slide-frame pre code,
+.cp #print .slide-frame pre code,
+.cp div#modal #content .slide-frame code code,
+.cp #print .slide-frame code code {
+  font-size: 100%;
+  line-height: 1em;
+}
+.cp div#modal #content .slide-frame ul ul,
+.cp #print .slide-frame ul ul,
+.cp div#modal #content .slide-frame ol ul,
+.cp #print .slide-frame ol ul,
+.cp div#modal #content .slide-frame ul ol,
+.cp #print .slide-frame ul ol,
+.cp div#modal #content .slide-frame ol ol,
+.cp #print .slide-frame ol ol {
+  margin: 0;
+}
+.cp div#modal #content .slide-frame h1,
+.cp #print .slide-frame h1 {
+  font-size: 50%;
+  line-height: 110%;
+}
+.cp div#modal #content .slide-frame h2,
+.cp #print .slide-frame h2 {
+  font-size: 42%;
+  line-height: 110%;
+}
+.cp div#modal #content .slide-frame h3,
+.cp #print .slide-frame h3 {
+  font-size: 36%;
+  line-height: 110%;
+}
+.cp div#modal #content .slide-frame h4,
+.cp #print .slide-frame h4 {
+  font-size: 30%;
+  line-height: 110%;
+}
+.cp div#modal #content .slide-frame h5,
+.cp #print .slide-frame h5 {
+  font-size: 22%;
+  line-height: 110%;
+}
+.cp div#modal #content .slide-frame h6,
+.cp #print .slide-frame h6 {
+  font-size: 16%;
+  line-height: 110%;
+}
+.cp div#modal #content .slide-frame h1,
+.cp #print .slide-frame h1,
+.cp div#modal #content .slide-frame h2,
+.cp #print .slide-frame h2,
+.cp div#modal #content .slide-frame h3,
+.cp #print .slide-frame h3,
+.cp div#modal #content .slide-frame h4,
+.cp #print .slide-frame h4,
+.cp div#modal #content .slide-frame h5,
+.cp #print .slide-frame h5,
+.cp div#modal #content .slide-frame h6,
+.cp #print .slide-frame h6 {
+  color: inherit;
+  text-align: center;
 }
-.cp div.modal table input,
-.cp div#modal table input {
-  height: 100%;
+.cp div#modal #content .slide-frame pre > code,
+.cp #print .slide-frame pre > code {
+  display: block;
+  position: relative;
+  border: 1px solid #333;
   width: 90%;
-  border: 3px solid #fff;
+  margin: auto;
+  padding-left: .25vw;
 }
-.cp div.modal table tfoot tr td,
-.cp div#modal table tfoot tr td {
-  z-index: 4000;
-  cursor: pointer;
+.cp div#modal #content .slide-frame ul,
+.cp #print .slide-frame ul,
+.cp div#modal #content .slide-frame ol,
+.cp #print .slide-frame ol {
+  min-width: 50%;
+  max-width: 100%;
+  display: table;
+  margin: 0 auto;
 }
-.cp div.modal #addtime,
-.cp div#modal #addtime,
-.cp div.modal #adddate,
-.cp div#modal #adddate {
-  color: #46E981;
-  border: 1px solid #46E981;
-  padding: 15px;
-}
-.cp div.modal #adddate,
-.cp div#modal #adddate {
-  border-top-left-radius: 5px;
-}
-.cp div.modal #addtime,
-.cp div#modal #addtime {
-  border-bottom-left-radius: 5px;
+.cp div#modal #content .slide-frame img,
+.cp #print .slide-frame img {
+  position: relative;
+  min-width: 1%;
+  max-width: 90%;
+  max-height: 90%;
+  margin: auto;
 }
diff --git a/www/slide/slide.less b/www/slide/slide.less
index c69d01e9e..31dd1c120 100644
--- a/www/slide/slide.less
+++ b/www/slide/slide.less
@@ -48,7 +48,7 @@ body {
 @media print {
     @page {
         margin: 0;
-        size: auto;
+        size: landscape;
     }
     body {
         .CodeMirror, #cme_toolbox {
@@ -66,7 +66,7 @@ body {
         overflow: visible;
     }
     html {
-        #print {
+        .cp #print {
             display: block;
             visibility: visible;
             * {
@@ -75,17 +75,26 @@ body {
         }
     }
 }
+
+
+.cp {
+
+/* Slide position (print mode) */
 #print {
     position: relative;
     display: none;
+    font-size: 11.25vw;
     .slide-frame {
-        display: flex !important;
-        justify-content: center;
-        align-items: center;
-        flex-flow: column;
-        padding: 5vh 0;
-        height: 100vh;
-        width: 100%;
+        display: block !important;
+        // justify-content: center;
+        //align-items: center;
+        // flex-flow: column;
+        padding: 2.5%;
+        margin-top: ~"calc((100vh - 56.25vw)/2)";
+        border-top: 1px solid black;
+        border-bottom: 1px solid black;
+        height: 56.25vw;
+        width: 100vw;
         page-break-after: always;
         position: relative;
         box-sizing: border-box;
@@ -99,137 +108,91 @@ body {
             position: absolute;
             right: 5vh;
             bottom: 5vh;
+            font-size: 15px;
         }
         .slideDate {
             position: absolute;
             left: 5vh;
             bottom: 5vh;
+            font-size: 15px;
         }
         .slideTitle {
             position: absolute;
             top: 5vh;
             left: 0px; right: 0px;
             text-align: center;
+            font-size: 15px;
         }
     }
 }
 
-.cp {
-
-&.slide {
-    #modal {
-        .button {
-            position: absolute;
-            cursor: pointer;
-            font-size: 30px;
-            opacity: 0.6;
-            display: none;
-        }
-        .button:hover {
-            opacity: 1;
-            display: block !important;
-        }
-        #button_exit {
-            left: 20px;
-            top: 20px;
-            z-index: 9001;
-        }
-        #button_left {
-            left: 6vw;
-            bottom: 10vh;
-        }
-        #button_right {
-            right: 6vw;
-            bottom: 10vh;
-        }
-        #content {
-            h1, h2, h3, h4, h5, h6 {
-                text-align: center;
-            }
-
-        }
-        &.shown {
-            display: block;
-            position: fixed;
-            top: 0px;
-            left: 0px;
-            z-index: 100;
-            background-color: black;
-            color: white;
-            height: 100vh;
-            width: 100%;
-        }
-    }
-    #modal #content {
-        p, ul, ol { font-size: 26px; }
-
-        img {
-            position: relative;
-            min-width: 1%;
-            max-width: 90%;
-            max-height: 90%;
-            margin: auto;
-        }
-    }
-}
 
+/* Slide position (present mode) */
 div.modal, div#modal {
     display: none;
 
+    /* Navigation buttons */
+    .button {
+        position: absolute;
+        cursor: pointer;
+        font-size: 30px;
+        opacity: 0.6;
+        display: none;
+    }
+    .button:hover {
+        opacity: 1;
+        display: block !important;
+    }
+    #button_exit {
+        left: 20px;
+        top: 20px;
+        z-index: 9001;
+    }
+    #button_left {
+        left: 6vw;
+        bottom: 10vh;
+    }
+    #button_right {
+        right: 6vw;
+        bottom: 10vh;
+    }
+    &.shown {
+        display: block;
+        position: fixed;
+        top: 0px;
+        left: 0px;
+        z-index: 100;
+        background-color: black;
+        color: white;
+        height: 100vh;
+        width: 100%;
+    }
     #content {
-        box-sizing: border-box;
-        border: 1px solid white;
-
-        vertical-align: middle;
-        padding: 2.5vw;
-
-        /* center things as much as possible
+        font-size: 20vh;
+        .slide-frame {
+            box-sizing: border-box;
+            border: 1px solid white;
 
-            margin-top: 50vh;
-            margin-bottom: 50vh;
-            transform: translateY(-50%);
+            vertical-align: middle;
+            // padding: 2.5vw;
 
-        */
+            /* center things as much as possible
 
-        width: 100vw;
-        height: 56.25vw; // height:width ratio = 9/16 = .5625
-        max-height: 100vh;
-        max-width: 177.78vh; // 16/9 = 1.778
-        margin: auto;
-        position: absolute;
-        top:0;bottom:0; // vertical center
-        left:0;right:0; // horizontal center
-
-        p, li, pre, code {
-            .size(2.75);
-        }
+                margin-top: 50vh;
+                margin-bottom: 50vh;
+                transform: translateY(-50%);
 
-        h1 { .size(5); }
-        h2 { .size(4.2); }
-        h3 { .size(3.6); }
-        h4 { .size (3); }
-        h5 { .size(2.2); }
-        h6 { .size(1.6); }
-
-        h1, h2, h3, h4, h5, h6 {
-            color: inherit;
-            text-align: center;
-        }
+            */
 
-        pre > code {
-            display: block;
-            position: relative;
-            border: 1px solid #333;
-            width: 90%;
+            padding: 2.5%;
+            width: 100vw;
+            height: 56.25vw; // height:width ratio = 9/16 = .5625
+            max-height: 100vh;
+            max-width: 177.78vh; // 16/9 = 1.778
             margin: auto;
-            padding-left: .25vw;
-        }
-
-        ul, ol {
-            min-width: 50%;
-            max-width: 100%;
-            display: table;
-            margin: 0 auto;
+            position: absolute;
+            top:0;bottom:0; // vertical center
+            left:0;right:0; // horizontal center
         }
     }
 
@@ -260,55 +223,60 @@ div.modal, div#modal {
     &.shown {
         display: block;
     }
+}
 
-    table {
-        margin: 30px;
-
-        border-collapse: collapse;
-        tr {
-            td {
+/* Slide content */
+div#modal #content, #print {
+    .slide-frame {
+        p, li, pre, code {
+            .size(2.75);
+            p, li, pre, code {
+                font-size: 100%;
+                line-height: 1em;
             }
         }
-
-        input {
-            height: 100%;
-            width: 90%;
-            border: 3px solid @base;
+        ul, ol {
+            ul, ol {
+                margin: 0;
+            }
         }
 
-        thead {
-            tr {
-                th {
-                    span.remove {
-                    }
-                }
-            }
+        h1 { .size(5); }
+        h2 { .size(4.2); }
+        h3 { .size(3.6); }
+        h4 { .size (3); }
+        h5 { .size(2.2); }
+        h6 { .size(1.6); }
+
+        h1, h2, h3, h4, h5, h6 {
+            color: inherit;
+            text-align: center;
         }
-        tbody {
-            tr {
-                td {
 
-                }
-            }
+        pre > code {
+            display: block;
+            position: relative;
+            border: 1px solid #333;
+            width: 90%;
+            margin: auto;
+            padding-left: .25vw;
         }
-        tfoot {
-            tr {
-                td {
-                    z-index: 4000;
-                    cursor: pointer;
-                }
-            }
+
+        ul, ol {
+            min-width: 50%;
+            max-width: 100%;
+            display: table;
+            margin: 0 auto;
         }
-    }
+        // p, ul, ol { padding-left: 10%; }
 
-    #addtime,
-    #adddate {
-        color: @cp-green;
-        border: 1px solid @cp-green;
-        padding: 15px;
+        img {
+            position: relative;
+            min-width: 1%;
+            max-width: 90%;
+            max-height: 90%;
+            margin: auto;
+        }
     }
-
-    #adddate { .top-left; }
-    #addtime { .bottom-left; }
 }
 }