Safari fix (fixes #96), YouTube tweaks, docs

docs/src/less/components/base.less

@@ -25,6 +25,7 @@ body {
     text-align: center;
     color: @gray;
     .font-smoothing(on);
+    padding: 0 (@padding-base / 2);
 }
 
 // Header

docs/src/less/components/buttons.less

@@ -101,7 +101,8 @@ nav {
 	}
 }
 .btn-primary {
-	background: linear-gradient(@link-color, darken(@link-color, 3%));
+	background-image: linear-gradient(@link-color, darken(@link-color, 3%));
+	background-color: @link-color;
 	border-color: darken(@link-color, 10%);
 	box-shadow: 0 1px 1px rgba(0,0,0, .15);
 	text-shadow: 0 1px 1px rgba(0,0,0, .1);

docs/src/less/components/examples.less

@@ -22,9 +22,22 @@
         overflow: hidden;
     }
 }
+// Base styles
 .example-video .player {
     max-width: @example-width-video;
 
+    video,
+    iframe {
+        border-radius: @border-radius-base;
+    }
+    iframe {
+        -webkit-mask-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAA5JREFUeNpiYGBgAAgwAAAEAAGbA+oJAAAAAElFTkSuQmCC);
+    }
+}
+
+// Style full supported player
+.example-video .player-video,
+.example-video .player-youtube {
     video,
     iframe {
         border-radius: @border-radius-base @border-radius-base 0 0;
@@ -35,5 +48,14 @@
     &-fullscreen,
     &.fullscreen-active {
         max-width: none;
+
+        .player-controls,
+        video,
+        iframe {
+            border-radius: 0;
+        }
+        iframe {
+            -webkit-mask-image: none;
+        }
     }
 }