Icon box truncated in boxed layout

Hi,

I have a problem with the icon box when using the shortcode on a post, in the boxed layout.
The left border appears truncated:

Here’s the shortcode I am using: [av_icon_box icon='ue818' font='entypo-fontello' position='top' title='vcvcvc' link='' linktarget='' linkelement=''] cxcx [/av_icon_box]

Is there a way to solve this problem?

I have another related question.

2) The shortcode allows us to build 1/1, or 1/2 + 1/2, 2/3+1/3, 3/4 & 1/4 layouts.
However, it doesn’t work when I tried to use that logic to have a centered content.
I tried using that logic when I wanted a centred 1/4 + 2/4 + 1/4 layout with that code, but it didn’t work:
[av_one_fourth first]Add Content here[/av_one_fourth]
[av_two_fourth][av_icon_box icon='ue818' font='entypo-fontello' position='top' title='vcvcvc' link='' linktarget='' linkelement=''] cxcx [/av_icon_box][/av_two_fourth]
[av_one_fourth]Add Content here[/av_one_fourth]

It may be linked to the answer of my first question, but is there a way to specify the width (in % instead of px, if possible) of the icon box via css?

Thanks in advance,
Cheers!