add header to preview frame

client/modules/IDE/pages/IDEView.jsx

@@ -320,6 +320,9 @@ class IDEView extends React.Component {
                 />
               </SplitPane>
               <div className="preview-frame-holder">
+                <header className="preview-frame__header">
+                  <h2 className="preview-frame__title">Preview</h2>
+                </header>
                 <div className="preview-frame-overlay" ref={(element) => { this.overlay = element; }}>
                 </div>
                 <div>

client/styles/components/_preview-frame.scss

@@ -0,0 +1,38 @@
+.preview-frame {
+  min-height: 100%;
+  min-width: 100%;
+  position: absolute;
+}
+
+
+.preview-frame-overlay {
+  height: 100%;
+  width: 100%;
+  position: absolute;
+  z-index: 10;
+  display: none;
+}
+
+.preview-frame-placeholder {
+  width: #{400 / $base-font-size}rem;
+  height: #{400 / $base-font-size}rem;
+  position: absolute;
+  @include themify() {
+    background: getThemifyVariable('preview-placeholder-color');
+  }
+}
+
+.preview-frame__header {
+  height: #{29 / $base-font-size}rem;
+}
+
+.preview-frame__title {
+  @include themify() {
+    color: getThemifyVariable('secondary-text-color');
+  }
+  height: #{29 / $base-font-size}rem;
+  padding-top: #{7 / $base-font-size}rem;
+  padding-left: #{5 / $base-font-size}rem;
+  font-size: #{12 / $base-font-size}rem;
+  font-weight: normal;
+}

client/styles/layout/_ide.scss

@@ -35,30 +35,6 @@
 	@extend %hidden-element;
 }
 
-.preview-frame {
-  min-height: 100%;
-  min-width: 100%;
-  position: absolute;
-}
-
-
-.preview-frame-overlay {
-  height: 100%;
-  width: 100%;
-  position: absolute;
-  z-index: 10;
-  display: none;
-}
-
-.preview-frame-placeholder {
-  width: #{400 / $base-font-size}rem;
-  height: #{400 / $base-font-size}rem;
-  position: absolute;
-  @include themify() {
-    background: getThemifyVariable('preview-placeholder-color');
-  }
-}
-
 .toolbar {
 	width: 100%;
 }

client/styles/main.scss

@@ -32,6 +32,7 @@
 @import 'components/timer';
 @import 'components/form-container';
 @import 'components/error-modal';
+@import 'components/preview-frame';
 
 @import 'layout/ide';
 @import 'layout/fullscreen';