Looks like <h1>s with nested <em>s or <i>s are used as pullquotes (or something like that) on this site. Now it looks like a regular header in your IV, but not on the site (because of italic font use). My big list of pages using this technique (just to prove that isn't a unique case):
https://the-geek.ru/reviews/obzor-micromax-q4260-byudzhetnik-s-lte-i-skanerom
https://the-geek.ru/reviews/obzor-moto-z-smartfon-transformer
https://the-geek.ru/reviews/obzor-plantronics-backbeat-500-dostupnyiy-zvuk-po-priyatnoy-tsene
https://the-geek.ru/reviews/obzor-huawei-mediapad-m3-gromkiy-i-tonkiy
https://the-geek.ru/article/anonimnost-valyuta-buduschego
https://the-geek.ru/article/zhadnost-apple-pochemu-poyavilsya-iphone-x
https://the-geek.ru/article/planshetyi-ot-rosteh-vyipustit-staryo-i-potratit-na-nego-290-mlrd-rubley