Add all files

404.php

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+<?php
+/**
+ * The template for displaying 404 pages (not found)
+ *
+ * @link https://codex.wordpress.org/Creating_an_Error_404_Page
+ *
+ * @package WordPress
+ * @subpackage Twenty_Seventeen
+ * @since 1.0
+ * @version 1.0
+ */
+
+get_header(); ?>
+
+<div class="wrap">
+	<div id="primary" class="content-area">
+		<main id="main" class="site-main" role="main">
+
+			<section class="error-404 not-found">
+				<header class="page-header">
+					<h1 class="page-title"><?php _e( 'Oops! That page can&rsquo;t be found.', 'twentyseventeen' ); ?></h1>
+				</header><!-- .page-header -->
+				<div class="page-content">
+					<p><?php _e( 'It looks like nothing was found at this location. Maybe try a search?', 'twentyseventeen' ); ?></p>
+
+				</div><!-- .page-content -->
+			</section><!-- .error-404 -->
+		</main><!-- #main -->
+	</div><!-- #primary -->
+</div><!-- .wrap -->
+
+<?php get_footer();

archive.php

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+<?php
+/**
+ * The template for displaying archive pages
+ *
+ * @link https://codex.wordpress.org/Template_Hierarchy
+ *
+ * @package WordPress
+ * @subpackage Twenty_Seventeen
+ * @since 1.0
+ * @version 1.0
+ */
+
+get_header(); ?>
+
+<div class="wrap">
+	<div class="archive-menu">
+		<?php
+			the_archive_title( '<div class="archive-title">', '</div>' );
+			if ( is_category() ) {
+				$category = get_category( get_query_var('cat') );
+				if ( ! empty( $category ) )
+					echo '<a href="' . get_category_feed_link( $category->cat_ID ) . '" class="rss-header" title="' . sprintf( __( 'Subscribe to this category', 'appthemes' ), $category->name ) . '" rel="nofollow"><i class="fa fa-rss-square"></i></a>';
+			} else if (  is_tag() ) {
+				$tag_id = get_query_var('tag_id');
+				echo '<a href="' . get_tag_feed_link( $tag_id) . '" class="rss-header" title="Subscribe to this tag" rel="nofollow"><i class="fa fa-rss-square"></i></a>';
+			} else if ( is_author() ) {
+				echo '<a href="feed" class="rss-header" title="Subscribe to this author" rel="nofollow"><i class="fa fa-rss-square"></i></a>';
+			}
+		?>
+	</div>
+	<div id="primary" class="content-area">
+		<main id="main" class="site-main" role="main">
+
+		<?php
+		if ( have_posts() ) : ?>
+			<?php
+			/* Start the Loop */
+			while ( have_posts() ) : the_post();
+
+				/*
+				 * Include the Post-Format-specific template for the content.
+				 * If you want to override this in a child theme, then include a file
+				 * called content-___.php (where ___ is the Post Format name) and that will be used instead.
+				 */
+				get_template_part( 'template-parts/post/content-excerpt', get_post_format() );
+
+			endwhile;
+
+			the_posts_pagination( array(
+				'prev_text' => twentyseventeen_get_svg( array( 'icon' => 'arrow-left' ) ) . '<span class="screen-reader-text">' . __( 'Previous page', 'twentyseventeen' ) . '</span>',
+				'next_text' => '<span class="screen-reader-text">' . __( 'Next page', 'twentyseventeen' ) . '</span>' . twentyseventeen_get_svg( array( 'icon' => 'arrow-right' ) ),
+				'before_page_number' => '<span class="meta-nav screen-reader-text">' . __( 'Page', 'twentyseventeen' ) . ' </span>',
+			) );
+
+		else :
+
+			get_template_part( 'template-parts/post/content', 'none' );
+
+		endif; ?>
+
+		</main><!-- #main -->
+	</div><!-- #primary -->
+	<?php // get_sidebar(); ?>
+</div><!-- .wrap -->
+
+<?php get_footer();