if ( ! function_exists( 'electro_post_archive_header' ) ) {
    function electro_post_archive_header() {
        if( is_home() ) {
            ?>
            <header class="page-header">
                <h1 class="page-title">Blog</h1>
            </header><!-- .page-header -->
            <?php
        } elseif( is_archive() && 'post' == get_post_type() ) {
            ?>
            <header class="page-header">
                <?php
                    the_archive_title( '<h1 class="page-title">', '</h1>' );
                    the_archive_description( '<div class="taxonomy-description">', '</div>' );
                ?>
            </header><!-- .page-header -->
            <?php
        }
    }
}
add_action( 'electro_content_top', 'electro_post_archive_header', 15 );