need some help

Hi,

I was trying to change something on my site. I found a suggestion on the forum, I’d have to remove some code in the single page (page.php) in the editor. I selected my child theme but forgot to click ‘select’. Now I’ve deleted part of the original page.php in my editor and my site has partly disappeared. I don’t know how to fix it. Could anyone give me the content of this page.php so that I can restore it? My theme is twenty-fifteen, my site is metaheemskerk.com

Thanks a lot!