diff --git a/index.html b/index.html
index 1490695..78e152b 100644
--- a/index.html
+++ b/index.html
@@ -77,7 +77,7 @@
 
     <!--
         
-        Impress.js doesn't depend on any external stylesheet. Script adds all styles it needs for
+        Impress.js doesn't depend on any external stylesheets. It adds all of the styles it needs for the
         presentation to work.
         
         This style below contains styles only for demo presentation. Browse it to see how impress.js
@@ -294,7 +294,7 @@
 
     <!--
         
-        So to make a summary of all the possible attributes used to position presentation steps, we have:
+        So to summarize of all the possible attributes used to position presentation steps, we have:
         
         * `data-x`, `data-y`, `data-z` - they define the position of **the center** of step element on
             the canvas in pixels; their default value is 0;