Add code where?

I’d like to add the code <?php if (shortcode_exists( 'simple-slider' )) : do_shortcode( '[simple-slider]' ); endif; ?> somewhere. But where should I do this? Which file? You say: “You will need to manually edit your theme and insert the following code to display the slider. This is typically added after your opening body or header tag and it will only work on your front page. The slider will not display properly if this is wrapped in additional tags.” I have a child theme. This topic was modified 9 years, 2 months ago by janbletz .