finished image centering, added tags to sidebar

style.css

@@ -1433,11 +1433,9 @@ pre code{
 }
 
 .aligncenter {
-    position: center;
-    display: flex;
-    flex-wrap: wrap; /* optional. only if you want the items to wrap */
-    justify-content: center; /* for horizontal alignment */
-    align-items: center; /* for vertical alignment */
+    display: block; /*for the img inside your div */
+    margin-left: auto;
+    margin-right: auto;
 }