columns descending instead of aligned in a row

Hi,

When I use the option for three columns of 30%, each subsequent column begins a bit lower than the beginning point of the column to its left. Why would that be?

This page has multiple examples of what I mean:

http://torahreviewcenter.org/services/

An example of the code looks like this:

[lgc_column grid="30" tablet_grid="50" mobile_grid="100" last="false"]
<h2 style="text-align: center;">Chumash</h2>
Internalize Hashem's Words.
The parsha, the meforshim, the concepts. Your son develops a strong connection with Hashem and as a member of the Jewish nation.
[/lgc_column]
[lgc_column grid="30" tablet_grid="50" mobile_grid="100" last="false"]
<h2 style="text-align: center;">Mishna</h2>
The basis of the Oral Law.
The mesechtos, the meforshim, step-by-step explanation of the analytical process. Your son experiences how the words of Hashem apply to actual situations.[/lgc_column]
[lgc_column grid="30" tablet_grid="50" mobile_grid="100" last="true"]
<h2 style="text-align: center;">Gemara</h2>
The fine points of Jewish Law.
The path of understanding from a seminal idea to the application of that idea in multiple situations. Your son hones his skills of pinpointing the underlying concept and applying it correctly.[/lgc_column]

Any ideas for straightening things out?

Thanks so much!