[Plugin: Jetpack] Social sharing icons not showing

Hello,

Today I upgraded Jetpack to the version 4.1.1
However now I have a problem with the social sharing buttons.

I have a custom CSS for these buttons and I want to display the icons.

This CSS code was running well until the upgrade:

———–
/* Icon image in share button for Twitter */
li.share-twitter a.sd-button > span {
background-image: none;
}

li.share-twitter a.sd-button > span::before {
content: ‘\f202’;
font-family: “genericons”;
font-size: 115%;
vertical-align: bottom;
padding-right: 5px;
}

/* Icon image in share button for Facebook */
li.share-facebook a.sd-button > span {
background-image: none;
}

li.share-facebook a.sd-button > span::before {
content: ‘\f204’;
font-family: “genericons”;
font-size: 115%;
vertical-align: bottom;
padding-right: 5px;
}
———–

Can you please tell me what I should do in order to have these icons show again?

Here is my website, you can find the sharing buttons below each post content:

http://dreamedfortune.com/2016/07/13/start-online-business

Regards