How to apply css to social media/facebook api

[newcoder1010]

Hello,

I have social media facebook api block.  It has 4 div classes. I needed to place them in the center (mobile version). I was able to do it. Next,  I would like to apply same width and height and border:1px to all divs but I could not do it. I would be able to do it if I could change the div classes in tpl file. But I could not because it is controlled by facebook. I think. 

I spent entire week. I wrote so many css but I simply failed. It is mainly because of the default css and div classes. If you please visit my page and see if you can help me fixing the issue, it would help me whole lot. Block class is sma.

My site.

https://drive.google.com/open?id=1bzKSVe6R8bBPDuZ1qHx7nPlU_vvb5bIosOw31KenWXM

Thanks much.