Seems like im no longer can access your site as you can see here http://take.ms/7JxRL
Can you try to re-apply css codes below at this path .../templates/esmobile/css/custom.css and see how it goes.
[gist type="css"]
#eb.is-mobile .eb-entry-article {
font-size: 20px;
}
[/gist]
Your Ip address accidentally blocked by Akeeba Security. I have listed your IP Address in whitelist.
It seems to be for me you manage to enter to admin backend bynow, I have seen the code you mentioned already in custom css. But until now I didn't see the changes yet. The font still small on my mobile device although I have cleared the cache.
Yes it seems that i cant access them as you can see here http://take.ms/nawNT. Here my ip address 219.92.71.169 and my email warith@stackideas.com
By the way, maybe you can clear your cloudflare cache first and see whether those changes done on your site take place or not. It those changes take place, there it should works fine now.