diff --git a/wp-content/themes/twentyeleven/style.css b/wp-content/themes/twentyeleven/style.css
index 9cbb2a4c87..27c3304c8b 100644
--- a/wp-content/themes/twentyeleven/style.css
+++ b/wp-content/themes/twentyeleven/style.css
@@ -1964,6 +1964,10 @@ section.ephemera .entry-title a span {
 	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,
diff --git a/wp-content/themes/twentyfifteen/style.css b/wp-content/themes/twentyfifteen/style.css
index ad5b810f30..807018aa3e 100644
--- a/wp-content/themes/twentyfifteen/style.css
+++ b/wp-content/themes/twentyfifteen/style.css
@@ -1415,8 +1415,9 @@ img.aligncenter {
 	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,
diff --git a/wp-content/themes/twentynineteen/sass/site/secondary/_widgets.scss b/wp-content/themes/twentynineteen/sass/site/secondary/_widgets.scss
index 5ff153ad76..7ade14cd07 100644
--- a/wp-content/themes/twentynineteen/sass/site/secondary/_widgets.scss
+++ b/wp-content/themes/twentynineteen/sass/site/secondary/_widgets.scss
@@ -94,4 +94,9 @@
 			padding: 0.5em;
 		}
 	}
+
+	.wp-calendar-nav-prev,
+	.wp-calendar-nav-next {
+		width: 40%;
+	}
 }
\ No newline at end of file
diff --git a/wp-content/themes/twentynineteen/style-rtl.css b/wp-content/themes/twentynineteen/style-rtl.css
index 0d0016dcb4..2c94bcf1fc 100644
--- a/wp-content/themes/twentynineteen/style-rtl.css
+++ b/wp-content/themes/twentynineteen/style-rtl.css
@@ -5186,6 +5186,11 @@ body.page .main-navigation {
   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 > *,
diff --git a/wp-content/themes/twentynineteen/style.css b/wp-content/themes/twentynineteen/style.css
index ce7499d8ac..fda7598c99 100644
--- a/wp-content/themes/twentynineteen/style.css
+++ b/wp-content/themes/twentynineteen/style.css
@@ -5192,6 +5192,11 @@ body.page .main-navigation {
   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 > *,
diff --git a/wp-content/themes/twentyseventeen/style.css b/wp-content/themes/twentyseventeen/style.css
index e690368731..6d288d09c4 100644
--- a/wp-content/themes/twentyseventeen/style.css
+++ b/wp-content/themes/twentyseventeen/style.css
@@ -2819,8 +2819,9 @@ h2.widget-title {
 	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,
diff --git a/wp-content/themes/twentysixteen/style.css b/wp-content/themes/twentysixteen/style.css
index 0277fac448..f7f2d4d462 100644
--- a/wp-content/themes/twentysixteen/style.css
+++ b/wp-content/themes/twentysixteen/style.css
@@ -1449,8 +1449,9 @@ blockquote:after,
 	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,
diff --git a/wp-content/themes/twentythirteen/style.css b/wp-content/themes/twentythirteen/style.css
index 84fdf73418..98bbf19c41 100644
--- a/wp-content/themes/twentythirteen/style.css
+++ b/wp-content/themes/twentythirteen/style.css
@@ -2599,6 +2599,11 @@ footer.entry-meta {
 	text-align: center;
 }
 
+.wp-calendar-nav-prev,
+.wp-calendar-nav-next {
+	width: 40%;
+}
+
 /* Text widget */
 .widget_text ul,
 .widget_text ol {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 5d36706374..16ab2b1191 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.4-RC1-47442';
+$wp_version = '5.4-RC1-47445';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.