Update: css property name change

Author: jessicarush

css_grid/index.html

@@ -39,9 +39,9 @@ <h1>Grid Container Properties.</h1>
           <li>grid-auto-rows: 100px;</li>
           <li>grid-auto-columns: 100px;</li>
           <li>grid-auto-flow: column;  (or 'row', 'row dense', 'column dense)</li>
-          <li>grid-column-gap: 5px;</li>
-          <li>grid-row-gap: 5px;</li>
-          <li>grid-gap: 5px;</li>
+          <li>column-gap: 5px;</li>
+          <li>row-gap: 5px;</li>
+          <li>gap: 5px;</li>
           <li class="comment"><em>/* (Shorthand) grid-template: grid-template-rows / grid-template-columns */</em></li>
           <li>grid-template: 50px auto 100px / 350px 1fr 150px; </li>
           <li class="comment"><em>/* (Shorthand) grid-template: 'grid-template-areas' template-row 'grid-template-areas' template-row / grid-template-columns */</em></li>