Why is the Cormorant-BoldItalic font not showing on iphone?

Question

iPhone

On PC and Android everything is fine, the font is visible. There seems to be some problem on ios.
What might they be?
On iphone:
On other systems:

Answer 1

There is no such font in iOS .
You need to add the font to the project and initialize with:
Learn more about installing custom fonts on the Apple website .
The list of available fonts out of the box can be found here .
UPD: I saw that the question is for the web. The problem is the same, solved by connecting the font.