diff --git a/src/HtmlSanitizer/HtmlSanitizer.cs b/src/HtmlSanitizer/HtmlSanitizer.cs
index 5973a09..ead8a67 100644
--- a/src/HtmlSanitizer/HtmlSanitizer.cs
+++ b/src/HtmlSanitizer/HtmlSanitizer.cs
@@ -244,32 +244,139 @@ namespace Ganss.XSS
         /// <summary>
         /// The default allowed CSS properties.
         /// </summary>
-        public static ISet<string> DefaultAllowedCssProperties { get; } = new HashSet<string>(StringComparer.OrdinalIgnoreCase) {
+        public static ISet<string> DefaultAllowedCssProperties { get; } = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        {
             // CSS 3 properties <http://www.w3.org/TR/CSS/#properties>
-            "background", "background-attachment", "background-color",
-            "background-image", "background-position", "background-repeat",
-            "border", "border-bottom", "border-bottom-color",
-            "border-bottom-style", "border-bottom-width", "border-collapse",
-            "border-color", "border-left", "border-left-color",
-            "border-left-style", "border-left-width", "border-right",
-            "border-right-color", "border-right-style", "border-right-width",
-            "border-spacing", "border-style", "border-top", "border-top-color",
-            "border-top-style", "border-top-width", "border-width", "bottom",
-            "caption-side", "clear", "clip", "color", "content",
-            "counter-increment", "counter-reset", "cursor", "direction", "display",
-            "empty-cells", "float", "font", "font-family", "font-size",
-            "font-style", "font-variant", "font-weight", "height", "left",
-            "letter-spacing", "line-height", "list-style", "list-style-image",
-            "list-style-position", "list-style-type", "margin", "margin-bottom",
-            "margin-left", "margin-right", "margin-top", "max-height", "max-width",
-            "min-height", "min-width", "opacity", "orphans", "outline",
-            "outline-color", "outline-style", "outline-width", "overflow",
-            "padding", "padding-bottom", "padding-left", "padding-right",
-            "padding-top", "page-break-after", "page-break-before",
-            "page-break-inside", "quotes", "right", "table-layout",
-            "text-align", "text-decoration", "text-indent", "text-transform",
-            "top", "unicode-bidi", "vertical-align", "visibility", "white-space",
-            "widows", "width", "word-spacing", "z-index" };
+            "background",
+            "background-attachment",
+            "background-clip",
+            "background-color",
+            "background-image",
+            "background-origin",
+            "background-position",
+            "background-repeat",
+            "background-size",
+            "border",
+            "border-bottom",
+            "border-bottom-color",
+            "border-bottom-left-radius",
+            "border-bottom-right-radius",
+            "border-bottom-style",
+            "border-bottom-width",
+            "border-collapse",
+            "border-color",
+            "border-image",
+            "border-image-outset",
+            "border-image-repeat",
+            "border-image-slice",
+            "border-image-source",
+            "border-image-width",
+            "border-left",
+            "border-left-color",
+            "border-left-style",
+            "border-left-width",
+            "border-radius",
+            "border-right",
+            "border-right-color",
+            "border-right-style",
+            "border-right-width",
+            "border-spacing",
+            "border-style",
+            "border-top",
+            "border-top-color",
+            "border-top-left-radius",
+            "border-top-right-radius",
+            "border-top-style",
+            "border-top-width",
+            "border-width",
+            "bottom",
+            "caption-side",
+            "clear",
+            "clip",
+            "color",
+            "content",
+            "counter-increment",
+            "counter-reset",
+            "cursor",
+            "direction",
+            "display",
+            "empty-cells",
+            "float",
+            "font",
+            "font-family",
+            "font-feature-settings",
+            "font-kerning",
+            "font-language-override",
+            "font-size",
+            "font-size-adjust",
+            "font-stretch",
+            "font-style",
+            "font-synthesis",
+            "font-variant",
+            "font-variant-alternates",
+            "font-variant-caps",
+            "font-variant-east-asian",
+            "font-variant-ligatures",
+            "font-variant-numeric",
+            "font-variant-position",
+            "font-weight",
+            "height",
+            "left",
+            "letter-spacing",
+            "line-height",
+            "list-style",
+            "list-style-image",
+            "list-style-position",
+            "list-style-type",
+            "margin",
+            "margin-bottom",
+            "margin-left",
+            "margin-right",
+            "margin-top",
+            "max-height",
+            "max-width",
+            "min-height",
+            "min-width",
+            "opacity",
+            "orphans",
+            "outline",
+            "outline-color",
+            "outline-offset",
+            "outline-style",
+            "outline-width",
+            "overflow",
+            "overflow-wrap",
+            "overflow-x",
+            "overflow-y",
+            "padding",
+            "padding-bottom",
+            "padding-left",
+            "padding-right",
+            "padding-top",
+            "page-break-after",
+            "page-break-before",
+            "page-break-inside",
+            "quotes",
+            "right",
+            "table-layout",
+            "text-align",
+            "text-decoration",
+            "text-decoration-color",
+            "text-decoration-line",
+            "text-decoration-skip",
+            "text-decoration-style",
+            "text-indent",
+            "text-transform",
+            "top",
+            "unicode-bidi",
+            "vertical-align",
+            "visibility",
+            "white-space",
+            "widows",
+            "width",
+            "word-spacing",
+            "z-index"
+        };
 
         private Regex _disallowedCssPropertyValue;