Many thanks for your help
I have everything worked out.
1)Please tell me how can I remove these gaps on all the pages of my site? http://clip2net.com/s/3tTXk0A
2)In addition, I would like to insert the breadcrumbs on all the pages of my site from a third party developer and they have to be 100% of the width http://clip2net.com/s/3tTXKIh
Short-code for php file
echo do_shortcode( ‘[breadcrumb]’ );