share post button issue

Hi!

As you can see in the below screenshot, I’ve used the “share post” widget and changed the icons using CSS. It works just fine in Elementor, but once I move to the live version of the website (out of the builder), you can see that the social logos don’t show up. Instead, the font awesome icon ID that’s in the CSS code appears.
Here’s the screenshot:

https://www.screencast.com/t/Udit7d0s3D
Here’s the CSS code I’m using:

.fa-linkedin:before{
content: "\f0e1"
}
.fa-facebook:before{
content: "\f39e"
}

Before Elementor version update 2.9 (which caused several other issues on my site), I was able to have it working by editing the following part of the code: content: “\\f0e1” + content: “\\f39e” (double backslash instead of single).

Can anyone help me?

The page I need help with: [log in to see the link]