Add plain class for plain images

css/theme/beige.css

@@ -209,6 +209,10 @@ body {
   border: 4px solid #333;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;

css/theme/black.css

@@ -205,6 +205,10 @@ body {
   border: 4px solid #fff;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;

css/theme/blood.css

@@ -214,6 +214,10 @@ body {
   border: 4px solid #eee;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;

css/theme/league.css

@@ -211,6 +211,10 @@ body {
   border: 4px solid #eee;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;

css/theme/moon.css

@@ -209,6 +209,10 @@ body {
   border: 4px solid #93a1a1;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;

css/theme/night.css

@@ -203,6 +203,10 @@ body {
   border: 4px solid #eee;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;

css/theme/serif.css

@@ -205,6 +205,10 @@ body {
   border: 4px solid #000;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;

css/theme/simple.css

@@ -205,6 +205,10 @@ body {
   border: 4px solid #000;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;

css/theme/sky.css

@@ -212,6 +212,10 @@ body {
   border: 4px solid #333;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;

css/theme/solarized.css

@@ -209,6 +209,10 @@ body {
   border: 4px solid #657b83;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;

css/theme/template/theme.scss

@@ -259,6 +259,11 @@ body {
 	box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
 }
 
+	.reveal section img.plain {
+		border: 0;
+		box-shadow: none;
+	}
+
 	.reveal a img {
 		-webkit-transition: all .15s linear;
 		   -moz-transition: all .15s linear;

css/theme/white.css

@@ -205,6 +205,10 @@ body {
   border: 4px solid #222;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
 
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
 .reveal a img {
   -webkit-transition: all 0.15s linear;
   -moz-transition: all 0.15s linear;