ویرایش کدهای css در افزونه EDD

ببخشید که من مبتدی هستم این تغییرات باید در فایل function.php قالب باید اعمال بشه یا فایل افزونه edd?

<?php if( ! empty( $_GET['edd-verify-success'] ) ) : ?>
<p class="edd-account-verified edd_success">
    <?php _e( 'Your account has been successfully verified!', 'easy-digital-downloads' ); ?>
</p>
<?php
endif;
/**
 * This template is used to display the download history of the current user.
 */
$purchases = edd_get_users_purchases( get_current_user_id(), 20, true, 'any' );
if ( $purchases ) :
    do_action( 'edd_before_download_history' ); ?>
    <table id="edd_user_history" class="edd-table">
        <thead>
            <tr class="edd_download_history_row">
                <?php do_action( 'edd_download_history_header_start' ); ?>
                <th class="edd_download_download_name"><?php _e( 'Download Name', 'easy-digital-downloads' ); ?></th>
                <?php if ( ! edd_no_redownload() ) : ?>
                    <th class="edd_download_download_files"><?php _e( 'Files', 'easy-digital-downloads' ); ?></th>
                <?php endif; //End if no redownload?>
                <?php do_action( 'edd_download_history_header_end' ); ?>
            </tr>
        </thead>
        <?php foreach ( $purchases as $payment ) :
            $downloads      = edd_get_payment_meta_cart_details( $payment->ID, true );
            $purchase_data  = edd_get_payment_meta( $payment->ID );
            $email          = edd_get_payment_user_email( $payment->ID );

            if ( $downloads ) :
                foreach ( $downloads as $download ) :

                    // Skip over Bundles. Products included with a bundle will be displayed individually
                    if ( edd_is_bundled_product( $download['id'] ) )
                        continue; ?>

                    <tr class="edd_download_history_row">
                        <?php
                        $price_id       = edd_get_cart_item_price_id( $download );
                        // Get price ID of product with variable prices included in Bundle
                        if ( ! empty( $download['in_bundle'] ) && edd_has_variable_prices( $download['id'] ) ) {
                            $price_id = edd_get_bundle_item_price_id( $download['id'] );
                        }
                        $download_files = edd_get_download_files( $download['id'], $price_id );
                        $name           = $download['name'];

                        // Retrieve and append the price option name
                        if ( ! empty( $price_id ) && 0 !== $price_id ) {
                            $name .= ' - ' . edd_get_price_option_name( $download['id'], $price_id, $payment->ID );
                        }

                        do_action( 'edd_download_history_row_start', $payment->ID, $download['id'] );
                        ?>
                        <td class="edd_download_download_name"><?php echo esc_html( $name ); ?></td>

                        <?php if ( ! edd_no_redownload() ) : ?>
                            <td class="edd_download_download_files">
                                <?php

                                if ( 'publish' == $payment->post_status ) :

                                    if ( $download_files ) :

                                        foreach ( $download_files as $filekey => $file ) :

                                            $download_url = edd_get_download_file_url( $purchase_data['key'], $email, $filekey, $download['id'], $price_id );
                                            ?>

                                            <div class="edd_download_file">
                                                <a href="<?php echo esc_url( $download_url ); ?>" class="edd_download_file_link">
                                                    <?php echo edd_get_file_name( $file ); ?>
                                                </a>
                                            </div>

                                            <?php do_action( 'edd_download_history_files', $filekey, $file, $download['id'], $payment->ID, $purchase_data );
                                        endforeach;

                                    else :
                                        _e( 'No downloadable files found.', 'easy-digital-downloads' );
                                    endif; // End if payment complete

                                else : ?>
                                    <span class="edd_download_payment_status">
                                        <?php printf( __( 'Payment status is %s', 'easy-digital-downloads' ), edd_get_payment_status( $payment, true) ); ?>
                                    </span>
                                    <?php
                                endif; // End if $download_files
                                ?>
                            </td>
                        <?php endif; // End if ! edd_no_redownload()

                        do_action( 'edd_download_history_row_end', $payment->ID, $download['id'] );
                        ?>
                    </tr>
                    <?php
                endforeach; // End foreach $downloads
            endif; // End if $downloads
        endforeach;
        ?>
    </table>
    <?php
        echo edd_pagination( 
            array(
                'type'  => 'download_history',
                'total' => ceil( edd_count_purchases_of_customer() / 20 ) // 20 items per page
            )
        );
    ?>
    <?php do_action( 'edd_after_download_history' ); ?>
<?php else : ?>
    <p class="edd-no-downloads"><?php _e( 'You have not purchased any downloads', 'easy-digital-downloads' ); ?></p>
<?php endif; ?>

کدهای های بالا فایل .history-download.php در پوشه template افزونه edd است امکان داره بفرمایید در کدام قسمت target=”_blank” باید اضافه شود؟

سلام
کد های بالا را که بهت دادم رو در child theme فایل functions.php و یا قالب اصلی ادد کن
موفق باشید

در همان قسمتی که گفتید اعمال کردم ولی تغییری انجام نشد.