[peterjmag]

Indeed, that's a faux italic[1] created by the browser in the absence of a real italic font. Perhaps the author forgot to include Bembo Italic[2] in the @font-face declaration (or simply decided not to pay for it)?

[1] http://alistapart.com/article/say-no-to-faux-bold

[2] https://www.myfonts.com/fonts/mti/bembo/