diff --git a/wp-includes/css/wp-auth-check-rtl.css b/wp-includes/css/wp-auth-check-rtl.css
index a218492a37..90cae063ce 100644
--- a/wp-includes/css/wp-auth-check-rtl.css
+++ b/wp-includes/css/wp-auth-check-rtl.css
@@ -87,33 +87,24 @@
 
 #wp-auth-check-wrap .wp-auth-check-close {
 	position: absolute;
-	top: 8px;
-	left: 8px;
+	top: 5px;
+	left: 5px;
 	height: 22px;
 	width: 22px;
-	cursor: pointer;
+	color: #72777c;
 }
 
 #wp-auth-check-wrap .wp-auth-check-close:before {
 	content: "\f158";
-	display: block !important;
-	font: normal 20px/1 dashicons;
+	font: normal 20px/22px dashicons;
 	speak: none;
-	height: 22px;
-	margin: 2px 0;
-	text-align: center;
-	width: 22px;
-	color: #777;
 	-webkit-font-smoothing: antialiased !important;
 	-moz-osx-font-smoothing: grayscale;
 }
 
-#wp-auth-check-wrap .wp-auth-check-close:hover:before {
-	color: #0073aa;
-}
-
+#wp-auth-check-wrap .wp-auth-check-close:hover,
 #wp-auth-check-wrap .wp-auth-check-close:focus {
-	outline: 1px dotted #82878c;
+	color: #0073aa;
 }
 
 #wp-auth-check-wrap .wp-auth-fallback-expired {
diff --git a/wp-includes/css/wp-auth-check-rtl.min.css b/wp-includes/css/wp-auth-check-rtl.min.css
index 9f7a0b9dc8..b616519fe0 100644
--- a/wp-includes/css/wp-auth-check-rtl.min.css
+++ b/wp-includes/css/wp-auth-check-rtl.min.css
@@ -1 +1 @@
-#wp-auth-check-wrap.hidden{display:none}#wp-auth-check-wrap #wp-auth-check-bg{position:fixed;top:0;bottom:0;right:0;left:0;background:#000;opacity:.7;filter:alpha(opacity=70);z-index:1000010}#wp-auth-check-wrap #wp-auth-check{position:fixed;right:50%;overflow:hidden;top:40px;bottom:20px;max-height:415px;width:380px;margin:0 -190px 0 0;padding:30px 0 0;background-color:#f1f1f1;z-index:1000011;-webkit-box-shadow:0 3px 6px rgba(0,0,0,.3);box-shadow:0 3px 6px rgba(0,0,0,.3)}@media screen and (max-width:380px){#wp-auth-check-wrap #wp-auth-check{right:0;width:100%;margin:0}}#wp-auth-check-wrap.fallback #wp-auth-check{max-height:180px;overflow:auto}#wp-auth-check-wrap #wp-auth-check-form{height:100%;position:relative;overflow:auto;-webkit-overflow-scrolling:touch}#wp-auth-check-form.loading:before{content:"";display:block;width:20px;height:20px;position:absolute;right:50%;top:50%;margin:-10px -10px 0 0;background:url(../images/spinner.gif) center no-repeat;-webkit-background-size:20px 20px;background-size:20px 20px;-webkit-transform:translateZ(0);transform:translateZ(0)}@media print,(-webkit-min-device-pixel-ratio:1.25),(min-resolution:120dpi){#wp-auth-check-form.loading:before{background-image:url(../images/spinner-2x.gif)}}#wp-auth-check-wrap #wp-auth-check-form iframe{height:98%;width:100%}#wp-auth-check-wrap .wp-auth-check-close{position:absolute;top:8px;left:8px;height:22px;width:22px;cursor:pointer}#wp-auth-check-wrap .wp-auth-check-close:before{content:"\f158";display:block!important;font:400 20px/1 dashicons;speak:none;height:22px;margin:2px 0;text-align:center;width:22px;color:#777;-webkit-font-smoothing:antialiased!important;-moz-osx-font-smoothing:grayscale}#wp-auth-check-wrap .wp-auth-check-close:hover:before{color:#0073aa}#wp-auth-check-wrap .wp-auth-check-close:focus{outline:#82878c dotted 1px}#wp-auth-check-wrap .wp-auth-fallback-expired{outline:0}#wp-auth-check-wrap .wp-auth-fallback{font-size:14px;line-height:21px;padding:0 25px;display:none}#wp-auth-check-wrap.fallback .wp-auth-check-close,#wp-auth-check-wrap.fallback .wp-auth-fallback{display:block}
\ No newline at end of file
+#wp-auth-check-wrap.hidden{display:none}#wp-auth-check-wrap #wp-auth-check-bg{position:fixed;top:0;bottom:0;right:0;left:0;background:#000;opacity:.7;filter:alpha(opacity=70);z-index:1000010}#wp-auth-check-wrap #wp-auth-check{position:fixed;right:50%;overflow:hidden;top:40px;bottom:20px;max-height:415px;width:380px;margin:0 -190px 0 0;padding:30px 0 0;background-color:#f1f1f1;z-index:1000011;-webkit-box-shadow:0 3px 6px rgba(0,0,0,.3);box-shadow:0 3px 6px rgba(0,0,0,.3)}@media screen and (max-width:380px){#wp-auth-check-wrap #wp-auth-check{right:0;width:100%;margin:0}}#wp-auth-check-wrap.fallback #wp-auth-check{max-height:180px;overflow:auto}#wp-auth-check-wrap #wp-auth-check-form{height:100%;position:relative;overflow:auto;-webkit-overflow-scrolling:touch}#wp-auth-check-form.loading:before{content:"";display:block;width:20px;height:20px;position:absolute;right:50%;top:50%;margin:-10px -10px 0 0;background:url(../images/spinner.gif) center no-repeat;-webkit-background-size:20px 20px;background-size:20px 20px;-webkit-transform:translateZ(0);transform:translateZ(0)}@media print,(-webkit-min-device-pixel-ratio:1.25),(min-resolution:120dpi){#wp-auth-check-form.loading:before{background-image:url(../images/spinner-2x.gif)}}#wp-auth-check-wrap #wp-auth-check-form iframe{height:98%;width:100%}#wp-auth-check-wrap .wp-auth-check-close{position:absolute;top:5px;left:5px;height:22px;width:22px;color:#72777c}#wp-auth-check-wrap .wp-auth-check-close:before{content:"\f158";font:400 20px/22px dashicons;speak:none;-webkit-font-smoothing:antialiased!important;-moz-osx-font-smoothing:grayscale}#wp-auth-check-wrap .wp-auth-check-close:focus,#wp-auth-check-wrap .wp-auth-check-close:hover{color:#0073aa}#wp-auth-check-wrap .wp-auth-fallback-expired{outline:0}#wp-auth-check-wrap .wp-auth-fallback{font-size:14px;line-height:21px;padding:0 25px;display:none}#wp-auth-check-wrap.fallback .wp-auth-check-close,#wp-auth-check-wrap.fallback .wp-auth-fallback{display:block}
\ No newline at end of file
diff --git a/wp-includes/css/wp-auth-check.css b/wp-includes/css/wp-auth-check.css
index 5d31e0341f..0c1408ed91 100644
--- a/wp-includes/css/wp-auth-check.css
+++ b/wp-includes/css/wp-auth-check.css
@@ -87,33 +87,24 @@
 
 #wp-auth-check-wrap .wp-auth-check-close {
 	position: absolute;
-	top: 8px;
-	right: 8px;
+	top: 5px;
+	right: 5px;
 	height: 22px;
 	width: 22px;
-	cursor: pointer;
+	color: #72777c;
 }
 
 #wp-auth-check-wrap .wp-auth-check-close:before {
 	content: "\f158";
-	display: block !important;
-	font: normal 20px/1 dashicons;
+	font: normal 20px/22px dashicons;
 	speak: none;
-	height: 22px;
-	margin: 2px 0;
-	text-align: center;
-	width: 22px;
-	color: #777;
 	-webkit-font-smoothing: antialiased !important;
 	-moz-osx-font-smoothing: grayscale;
 }
 
-#wp-auth-check-wrap .wp-auth-check-close:hover:before {
-	color: #0073aa;
-}
-
+#wp-auth-check-wrap .wp-auth-check-close:hover,
 #wp-auth-check-wrap .wp-auth-check-close:focus {
-	outline: 1px dotted #82878c;
+	color: #0073aa;
 }
 
 #wp-auth-check-wrap .wp-auth-fallback-expired {
diff --git a/wp-includes/css/wp-auth-check.min.css b/wp-includes/css/wp-auth-check.min.css
index 1087f62fe2..4019d9a74a 100644
--- a/wp-includes/css/wp-auth-check.min.css
+++ b/wp-includes/css/wp-auth-check.min.css
@@ -1 +1 @@
-#wp-auth-check-wrap.hidden{display:none}#wp-auth-check-wrap #wp-auth-check-bg{position:fixed;top:0;bottom:0;left:0;right:0;background:#000;opacity:.7;filter:alpha(opacity=70);z-index:1000010}#wp-auth-check-wrap #wp-auth-check{position:fixed;left:50%;overflow:hidden;top:40px;bottom:20px;max-height:415px;width:380px;margin:0 0 0 -190px;padding:30px 0 0;background-color:#f1f1f1;z-index:1000011;-webkit-box-shadow:0 3px 6px rgba(0,0,0,.3);box-shadow:0 3px 6px rgba(0,0,0,.3)}@media screen and (max-width:380px){#wp-auth-check-wrap #wp-auth-check{left:0;width:100%;margin:0}}#wp-auth-check-wrap.fallback #wp-auth-check{max-height:180px;overflow:auto}#wp-auth-check-wrap #wp-auth-check-form{height:100%;position:relative;overflow:auto;-webkit-overflow-scrolling:touch}#wp-auth-check-form.loading:before{content:"";display:block;width:20px;height:20px;position:absolute;left:50%;top:50%;margin:-10px 0 0 -10px;background:url(../images/spinner.gif) center no-repeat;-webkit-background-size:20px 20px;background-size:20px 20px;-webkit-transform:translateZ(0);transform:translateZ(0)}@media print,(-webkit-min-device-pixel-ratio:1.25),(min-resolution:120dpi){#wp-auth-check-form.loading:before{background-image:url(../images/spinner-2x.gif)}}#wp-auth-check-wrap #wp-auth-check-form iframe{height:98%;width:100%}#wp-auth-check-wrap .wp-auth-check-close{position:absolute;top:8px;right:8px;height:22px;width:22px;cursor:pointer}#wp-auth-check-wrap .wp-auth-check-close:before{content:"\f158";display:block!important;font:400 20px/1 dashicons;speak:none;height:22px;margin:2px 0;text-align:center;width:22px;color:#777;-webkit-font-smoothing:antialiased!important;-moz-osx-font-smoothing:grayscale}#wp-auth-check-wrap .wp-auth-check-close:hover:before{color:#0073aa}#wp-auth-check-wrap .wp-auth-check-close:focus{outline:#82878c dotted 1px}#wp-auth-check-wrap .wp-auth-fallback-expired{outline:0}#wp-auth-check-wrap .wp-auth-fallback{font-size:14px;line-height:21px;padding:0 25px;display:none}#wp-auth-check-wrap.fallback .wp-auth-check-close,#wp-auth-check-wrap.fallback .wp-auth-fallback{display:block}
\ No newline at end of file
+#wp-auth-check-wrap.hidden{display:none}#wp-auth-check-wrap #wp-auth-check-bg{position:fixed;top:0;bottom:0;left:0;right:0;background:#000;opacity:.7;filter:alpha(opacity=70);z-index:1000010}#wp-auth-check-wrap #wp-auth-check{position:fixed;left:50%;overflow:hidden;top:40px;bottom:20px;max-height:415px;width:380px;margin:0 0 0 -190px;padding:30px 0 0;background-color:#f1f1f1;z-index:1000011;-webkit-box-shadow:0 3px 6px rgba(0,0,0,.3);box-shadow:0 3px 6px rgba(0,0,0,.3)}@media screen and (max-width:380px){#wp-auth-check-wrap #wp-auth-check{left:0;width:100%;margin:0}}#wp-auth-check-wrap.fallback #wp-auth-check{max-height:180px;overflow:auto}#wp-auth-check-wrap #wp-auth-check-form{height:100%;position:relative;overflow:auto;-webkit-overflow-scrolling:touch}#wp-auth-check-form.loading:before{content:"";display:block;width:20px;height:20px;position:absolute;left:50%;top:50%;margin:-10px 0 0 -10px;background:url(../images/spinner.gif) center no-repeat;-webkit-background-size:20px 20px;background-size:20px 20px;-webkit-transform:translateZ(0);transform:translateZ(0)}@media print,(-webkit-min-device-pixel-ratio:1.25),(min-resolution:120dpi){#wp-auth-check-form.loading:before{background-image:url(../images/spinner-2x.gif)}}#wp-auth-check-wrap #wp-auth-check-form iframe{height:98%;width:100%}#wp-auth-check-wrap .wp-auth-check-close{position:absolute;top:5px;right:5px;height:22px;width:22px;color:#72777c}#wp-auth-check-wrap .wp-auth-check-close:before{content:"\f158";font:400 20px/22px dashicons;speak:none;-webkit-font-smoothing:antialiased!important;-moz-osx-font-smoothing:grayscale}#wp-auth-check-wrap .wp-auth-check-close:focus,#wp-auth-check-wrap .wp-auth-check-close:hover{color:#0073aa}#wp-auth-check-wrap .wp-auth-fallback-expired{outline:0}#wp-auth-check-wrap .wp-auth-fallback{font-size:14px;line-height:21px;padding:0 25px;display:none}#wp-auth-check-wrap.fallback .wp-auth-check-close,#wp-auth-check-wrap.fallback .wp-auth-fallback{display:block}
\ No newline at end of file
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 9fd503fd0e..d5edb2c917 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -4934,7 +4934,7 @@ function wp_auth_check_html() {
 	<div id="wp-auth-check-wrap" class="<?php echo $wrap_class; ?>">
 	<div id="wp-auth-check-bg"></div>
 	<div id="wp-auth-check">
-	<div class="wp-auth-check-close" tabindex="0" title="<?php esc_attr_e('Close'); ?>"></div>
+	<button type="button" class="wp-auth-check-close button-link"><span class="screen-reader-text"><?php _e( 'Close dialog' ); ?></span></button>
 	<?php
 
 	if ( $same_domain ) {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a60f716f31..d8c002adf9 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-36013';
+$wp_version = '4.5-alpha-36014';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.