Update css for tictactoe gif image

Author: rmodi6

index.html

@@ -368,7 +368,7 @@ <h3 class="featurette-heading">Artificial Intelligence <br /><span class="text-m
           <div class="col-sm-5">
 
             <!-- Gif -->
-            <div class="gif-images-ttt">
+            <div class="gif-images">
               <img src="images/tictactoe.gif" alt="tictactoe-gif">
             </div>
             <!-- End Gif -->

main.css

@@ -66,7 +66,3 @@ ul.share-buttons li{
 .gif-images img{
   width: 100%;
 }
-
-.gif-images-ttt img{
-  height: 350px;
-}