Index: src/wp-content/themes/twentysixteen/functions.php
===================================================================
--- src/wp-content/themes/twentysixteen/functions.php	(revision 41035)
+++ src/wp-content/themes/twentysixteen/functions.php	(working copy)
@@ -407,7 +407,7 @@
 /**
  * Modifies tag cloud widget arguments to have all tags in the widget same font size.
  *
- * @since Twenty Sixteen 1.1
+ * @since Twenty Sixteen 1.3
  *
  * @param array $args Arguments for tag cloud widget.
  * @return array A new modified arguments.
@@ -416,6 +416,7 @@
 	$args['largest'] = 1;
 	$args['smallest'] = 1;
 	$args['unit'] = 'em';
+    $args['format']   = 'list';
 	return $args;
 }
 add_filter( 'widget_tag_cloud_args', 'twentysixteen_widget_tag_cloud_args' );
Index: src/wp-content/themes/twentysixteen/style.css
===================================================================
--- src/wp-content/themes/twentysixteen/style.css	(revision 41035)
+++ src/wp-content/themes/twentysixteen/style.css	(working copy)
@@ -1514,6 +1514,14 @@
 	padding: 0.5625em 0.4375em 0.5em;
 }
 
+.tagcloud ul {
+	list-style-type: none;
+}
+
+.tagcloud ul li {
+	display: inline-block;
+}
+
 .tagcloud a:hover,
 .tagcloud a:focus {
 	border-color: #007acc;