Index: src/wp-content/themes/twentythirteen/functions.php
===================================================================
--- src/wp-content/themes/twentythirteen/functions.php	(revision 41035)
+++ src/wp-content/themes/twentythirteen/functions.php	(working copy)
@@ -615,3 +615,20 @@
 	wp_enqueue_script( 'twentythirteen-customizer', get_template_directory_uri() . '/js/theme-customizer.js', array( 'customize-preview' ), '20141120', true );
 }
 add_action( 'customize_preview_init', 'twentythirteen_customize_preview_js' );
+
+/**
+ * Modifies tag cloud widget arguments to have all tags in the widget same font size and use list format for better accessibility.
+ *
+ * @since Twenty Thirteen 2.2
+ *
+ * @param array $args Arguments for tag cloud widget.
+ * @return array A new modified arguments.
+ */
+function twentyfourteen_widget_tag_cloud_args( $args ) {
+    $args['largest']  = 22;
+    $args['smallest'] = 8;
+    $args['unit']     = 'pt';
+    $args['format']   = 'list';
+    return $args;
+}
+add_filter( 'widget_tag_cloud_args', 'twentyfourteen_widget_tag_cloud_args' );
\ No newline at end of file
Index: src/wp-content/themes/twentythirteen/style.css
===================================================================
--- src/wp-content/themes/twentythirteen/style.css	(revision 41035)
+++ src/wp-content/themes/twentythirteen/style.css	(working copy)
@@ -2663,7 +2663,15 @@
 	margin: -10px auto 0;
 }
 
+.tagcloud ul {
+	list-style-type: none;
+}
 
+.tagcloud ul li {
+	display: inline-block;
+}
+
+
 /**
  * 8.0 Media Queries
  * ----------------------------------------------------------------------------