How to fix a bug with the disappearance of icons in the layout?

Question

css

Hello everyone, I hope someone has experienced something similar. I made a layout of a small landing page, everything looks great for me as per the layout, I send it off to the customer, and she says that she has no icons, at first I started thinking that maybe I didn’t clear the cache, and so on, but all my guesses were in vain. I asked the guys in the group if anyone knows what the matter is, they suggested that it might be because of the bootstrap, I connected a new version of the bootstrap but there are no results, everything is the same as before.
It was also revealed by the test method that this does not depend on the browser or operating system, the bug appears both on the PC and on the mobile.
Website link: Here
With icons:


Without icons:

Answer 1

Of course, they are not displayed, if you set the width through attributes, then the dimension ( px ) does not need to be specified. Chrome may ignore it, but mobile browsers or less popular ones no longer exist.
For good, you also need to specify the height.