Index: src/wp-content/themes/twentyeleven/style.css
===================================================================
--- src/wp-content/themes/twentyeleven/style.css	(revision 47435)
+++ src/wp-content/themes/twentyeleven/style.css	(working copy)
@@ -1964,6 +1964,10 @@
 	display: table-cell;
 	text-align: center;
 }
+.widget_calendar .wp-calendar-nav-prev,
+.widget_calendar .wp-calendar-nav-next {
+	width: 40%;
+}
 
 /* Text Widget */
 .widget_text ul,
Index: src/wp-content/themes/twentyfifteen/style.css
===================================================================
--- src/wp-content/themes/twentyfifteen/style.css	(revision 47435)
+++ src/wp-content/themes/twentyfifteen/style.css	(working copy)
@@ -1415,8 +1415,9 @@
 	display: table-cell;
 }
 
-.widget_calendar .wp-calendar-nav .pad {
-	width: 15%;
+.widget_calendar .wp-calendar-nav-prev,
+.widget_calendar .wp-calendar-nav-next {
+	width: 40%;
 }
 
 .widget_calendar td,
Index: src/wp-content/themes/twentynineteen/sass/site/secondary/_widgets.scss
===================================================================
--- src/wp-content/themes/twentynineteen/sass/site/secondary/_widgets.scss	(revision 47435)
+++ src/wp-content/themes/twentynineteen/sass/site/secondary/_widgets.scss	(working copy)
@@ -94,4 +94,9 @@
 			padding: 0.5em;
 		}
 	}
+
+	.wp-calendar-nav-prev,
+	.wp-calendar-nav-next {
+		width: 40%;
+	}
 }
\ No newline at end of file
Index: src/wp-content/themes/twentynineteen/style-rtl.css
===================================================================
--- src/wp-content/themes/twentynineteen/style-rtl.css	(revision 47435)
+++ src/wp-content/themes/twentynineteen/style-rtl.css	(working copy)
@@ -5186,6 +5186,11 @@
   padding: 0.5em;
 }
 
+.widget_calendar .calendar_wrap .wp-calendar-nav-prev,
+.widget_calendar .calendar_wrap .wp-calendar-nav-next {
+  width: 40%;
+}
+
 /* Blocks */
 /* !Block styles */
 .entry .entry-content > *,
Index: src/wp-content/themes/twentynineteen/style.css
===================================================================
--- src/wp-content/themes/twentynineteen/style.css	(revision 47435)
+++ src/wp-content/themes/twentynineteen/style.css	(working copy)
@@ -5192,6 +5192,11 @@
   padding: 0.5em;
 }
 
+.widget_calendar .calendar_wrap .wp-calendar-nav-prev,
+.widget_calendar .calendar_wrap .wp-calendar-nav-next {
+  width: 40%;
+}
+
 /* Blocks */
 /* !Block styles */
 .entry .entry-content > *,
Index: src/wp-content/themes/twentyseventeen/style.css
===================================================================
--- src/wp-content/themes/twentyseventeen/style.css	(revision 47435)
+++ src/wp-content/themes/twentyseventeen/style.css	(working copy)
@@ -2819,8 +2819,9 @@
 	display: table-cell;
 }
 
-.widget_calendar .wp-calendar-nav .pad {
-	width: 15%;
+.widget_calendar .wp-calendar-nav-prev,
+.widget_calendar .wp-calendar-nav-next {
+	width: 40%;
 }
 
 .widget_calendar th,
Index: src/wp-content/themes/twentysixteen/style.css
===================================================================
--- src/wp-content/themes/twentysixteen/style.css	(revision 47435)
+++ src/wp-content/themes/twentysixteen/style.css	(working copy)
@@ -1449,8 +1449,9 @@
 	display: table-cell;
 }
 
-.widget_calendar .wp-calendar-nav .pad {
-	width: 15%;
+.widget_calendar .wp-calendar-nav-prev,
+.widget_calendar .wp-calendar-nav-next {
+	width: 40%;
 }
 
 .widget_calendar td,
Index: src/wp-content/themes/twentythirteen/style.css
===================================================================
--- src/wp-content/themes/twentythirteen/style.css	(revision 47435)
+++ src/wp-content/themes/twentythirteen/style.css	(working copy)
@@ -2599,6 +2599,11 @@
 	text-align: center;
 }
 
+.wp-calendar-nav-prev,
+.wp-calendar-nav-next {
+	width: 40%;
+}
+
 /* Text widget */
 .widget_text ul,
 .widget_text ol {