feat: Twenty Sixteen 主题，带定制 Header 布局 + mu-plugins

twentysixteen/searchform.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Template for displaying search forms in Twenty Sixteen
+ *
+ * @package WordPress
+ * @subpackage Twenty_Sixteen
+ * @since Twenty Sixteen 1.0
+ */
+
+?>
+
+<form role="search" method="get" class="search-form" action="<?php echo esc_url( home_url( '/' ) ); ?>">
+	<label>
+		<span class="screen-reader-text">
+			<?php
+			/* translators: Hidden accessibility text. */
+			echo _x( 'Search for:', 'label', 'twentysixteen' );
+			?>
+		</span>
+		<input type="search" class="search-field" placeholder="<?php echo esc_attr_x( 'Search &hellip;', 'placeholder', 'twentysixteen' ); ?>" value="<?php echo get_search_query(); ?>" name="s" />
+	</label>
+	<button type="submit" class="search-submit"><span class="screen-reader-text">
+		<?php
+		/* translators: Hidden accessibility text. */
+		echo _x( 'Search', 'submit button', 'twentysixteen' );
+		?>
+	</span></button>
+</form>