diff --git a/index.html b/index.html
index 805835a1f..70fd4615c 100755
--- a/index.html
+++ b/index.html
@@ -91,6 +91,10 @@
               name: 'General',
               open: false,
               buildProps: ['float', 'display', 'position', 'top', 'right', 'left', 'bottom']
+            },{
+              name: 'Flex',
+              open: false,
+              buildProps: ['flex-direction', 'flex-wrap', 'justify-content', 'align-items', 'align-content', 'order', 'flex-grow', 'flex-shrink', 'align-self']
             },{
               name: 'Dimension',
               open: false,