<form method="get" action="<?php echo esc_url( home_url( '/' ) ); ?>">
	<div class="form-group">
		<input type="search" name="s" value="<?php echo get_search_query(); ?>" placeholder="<?php esc_attr_e('Search Here', 'buildark');?>" required>
		<button type="submit"><span class="icon fa fa-search"></span></button>
	</div>
</form>