Fix overflow issues on small screen

customize.dist/ckeditor-contents.css

@@ -52,6 +52,12 @@ body > .non-realtime:first-child + * {
     margin-top: 0;
 }
 
+@media (max-width: 600px) {
+    body {
+        padding-bottom: 100px;
+    }
+}
+
 .cke_editable
 {
     font-size: 16px;

www/code/app-code.less

@@ -146,6 +146,9 @@
                     flex: 1;
                     max-width: 100%;
                     resize: none;
+                    .CodeMirror-sizer > div {
+                        padding-bottom: 100px;
+                    }
                 }
                 #cp-app-code-preview {
                     display: none !important;

www/slide/app-slide.less

@@ -147,6 +147,16 @@
         }
     }
 
+    @media (max-width: @browser_media-medium-screen) {
+        #cp-app-slide-editor {
+            #cp-app-slide-editor-container {
+                .CodeMirror-sizer > div {
+                    padding-bottom: 100px;
+                }
+            }
+        }
+    }
+
     /* Slide position (print mode) */
     @ratio:0.9;
     @media print {