Index: wp-admin/css/wp-admin.css
===================================================================
--- wp-admin/css/wp-admin.css	(revision 22254)
+++ wp-admin/css/wp-admin.css	(working copy)
@@ -6460,8 +6460,6 @@
 }
 
 .login .button-primary {
-	font-size: 13px !important;
-	padding: .4em .8em;
 	float: right;
 }
 
Index: wp-login.php
===================================================================
--- wp-login.php	(revision 22254)
+++ wp-login.php	(working copy)
@@ -442,7 +442,7 @@
 	</p>
 <?php do_action('lostpassword_form'); ?>
 	<input type="hidden" name="redirect_to" value="<?php echo esc_attr( $redirect_to ); ?>" />
-	<p class="submit"><input type="submit" name="wp-submit" id="wp-submit" class="button-primary" value="<?php esc_attr_e('Get New Password'); ?>" /></p>
+	<p class="submit"><input type="submit" name="wp-submit" id="wp-submit" class="button button-primary button-large" value="<?php esc_attr_e('Get New Password'); ?>" /></p>
 </form>
 
 <p id="nav">
@@ -501,7 +501,7 @@
 	<p class="description indicator-hint"><?php _e('Hint: The password should be at least seven characters long. To make it stronger, use upper and lower case letters, numbers and symbols like ! " ? $ % ^ &amp; ).'); ?></p>
 
 	<br class="clear" />
-	<p class="submit"><input type="submit" name="wp-submit" id="wp-submit" class="button-primary" value="<?php esc_attr_e('Reset Password'); ?>" /></p>
+	<p class="submit"><input type="submit" name="wp-submit" id="wp-submit" class="button button-primary button-large" value="<?php esc_attr_e('Reset Password'); ?>" /></p>
 </form>
 
 <p id="nav">
@@ -557,7 +557,7 @@
 	<p id="reg_passmail"><?php _e('A password will be e-mailed to you.') ?></p>
 	<br class="clear" />
 	<input type="hidden" name="redirect_to" value="<?php echo esc_attr( $redirect_to ); ?>" />
-	<p class="submit"><input type="submit" name="wp-submit" id="wp-submit" class="button-primary" value="<?php esc_attr_e('Register'); ?>" /></p>
+	<p class="submit"><input type="submit" name="wp-submit" id="wp-submit" class="button button-primary button-large" value="<?php esc_attr_e('Register'); ?>" /></p>
 </form>
 
 <p id="nav">
@@ -689,7 +689,7 @@
 <?php do_action('login_form'); ?>
 	<p class="forgetmenot"><label for="rememberme"><input name="rememberme" type="checkbox" id="rememberme" value="forever" <?php checked( $rememberme ); ?> /> <?php esc_attr_e('Remember Me'); ?></label></p>
 	<p class="submit">
-		<input type="submit" name="wp-submit" id="wp-submit" class="button-primary" value="<?php esc_attr_e('Log In'); ?>" />
+		<input type="submit" name="wp-submit" id="wp-submit" class="button button-primary button-large" value="<?php esc_attr_e('Log In'); ?>" />
 <?php	if ( $interim_login ) { ?>
 		<input type="hidden" name="interim-login" value="1" />
 <?php	} else { ?>