diff --git a/README.md b/README.md
index 2bc98a39..06319514 100644
--- a/README.md
+++ b/README.md
@@ -65,7 +65,7 @@ Auto: The background image is displayed in its original size. Cover: Resize the
 >>**\_small** (number): The minimum height should only be used in instances where the image container height needs to be greater than the content e.g. to prevent a background image being cropped.
 
 #### Global responsive classes
->**_responsiveClasses_** (object): The responsive classes object adds the associated CSS class(es) to the container element at different device widths (`_large`, `_medium`, `_small`). The class(es) are removed between each device width. Useful for applying styles for a particular device width only rather than applying a global __classes_ style.
+>**\_responsiveClasses** (object): The responsive classes object adds the associated CSS class(es) to the container element at different device widths (`_large`, `_medium`, `_small`). The class(es) are removed between each device width. Useful for applying styles for a particular device width only rather than applying a global `_classes` style.
 
 >>**\_large** (string): Custom CSS class that is applied at the large device width. 
 
@@ -83,7 +83,7 @@ Auto: The background image is displayed in its original size. Cover: Resize the
 >>**\_small** (string): File name (including path) of the image used with small device width. Path should be relative to the *src* folder (e.g., *course/en/images/origami-menu-one.jpg*).
 
 #### **blocks.json**
->**_isDividerBlock** (boolean): - Determines whether the CSS class `is-divider-block` will be applied. Acceptable values are `true` and `false`.
+>**\_isDividerBlock** (boolean): - Determines whether the CSS class `is-divider-block` will be applied. Acceptable values are `true` and `false`.
 
 Visit the [**Vanilla** wiki](https://github.com/adaptlearning/adapt-contrib-vanilla/wiki) for more information about how to use and manipulate the theme.
 
@@ -116,4 +116,4 @@ No known limitations.
 **Author / maintainer:** Adapt Core Team with [contributors](https://github.com/adaptlearning/adapt-contrib-vanilla/graphs/contributors)  
 **Accessibility support:** WAI AA  
 **RTL support:** Yes  
-**Cross-platform coverage:** Chrome, Chrome for Android, Firefox (ESR + latest version), Edge, IE11, Safari 12+13 for macOS/iOS/iPadOS, Opera  
+**Cross-platform coverage:** Chrome, Chrome for Android, Firefox (ESR + latest version), Edge, IE11, Safari 14 for macOS/iOS/iPadOS, Opera  
diff --git a/properties.schema b/properties.schema
index 9971918e..f2d81126 100644
--- a/properties.schema
+++ b/properties.schema
@@ -742,7 +742,7 @@
                     }
                   }
                 },
-                "_responsiveClasses: {
+                "_responsiveClasses": {
                   "type": "object",
                   "required": false,
                   "legend": "Responsive classes",
@@ -945,7 +945,7 @@
                     }
                   }
                 },
-                "_responsiveClasses: {
+                "_responsiveClasses": {
                   "type": "object",
                   "required": false,
                   "legend": "Responsive classes",
@@ -1080,7 +1080,7 @@
                     }
                   }
                 },
-                "_responsiveClasses: {
+                "_responsiveClasses": {
                   "type": "object",
                   "required": false,
                   "legend": "Responsive classes",