I am having issue with Social Share buttons. I am using "Share This". The buttons were not showing properly, which Ihave discussed with Developer.

They have sent me this screenshot with error pointing out in CSS.

Please let me know where to edit in CodoForum CSS.

Hi,

Please ask your developer not to change any css styles of Codoforum.

The share buttons can be fixed by adding the following css style :

box-sizing: content-box;

They'll not change anything.

Please let me know in which file, I need to add the css style. I am trying in cache / css /c5fb8541164a09743dbbb898d581ef91.css , but it is not working. Please advice me.

As we said before, you do not have edit anything in Codoforum.

You have to edit the css of the social share buttons.
Or, is the css of the share buttons not available to you ?

I am using "sharethis" and they provide just a piece of code tags, no CSS.