Complex Email Template 1.3. Fix height table

Design
1

Hi there,
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I am using the Complex email template 1.3, and I am trying to set the different “fields” to equal height (see picture, I have put a red border around the “field”).
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Now, the html is quite complex, but normally setting “height: 100%” should set the height of an element to 100% if it’s parent component.
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I have found that there is a parent element that wraps two of these “fields” (see yellow border on picture).
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The html for this parent element is this:
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<td align=“center” valign=“top” style="-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%;mso-table-lspace:0pt;mso-table-rspace:0pt;font-size:0;" class=“padding”>

…
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My plan is setting “height: 100%;” on all the child elements of the above parent element (not on the parent element itself). But this doesn’t seem to have any effect.
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If I set the height on the above (parent) element’s first child, like so (see inline style):
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<div style=“display:inline-block; max-width:50%; min-width:374px; vertical-align:top; width:100%; height:100%;” class=“wrapper”>
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this has no effect.
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While setting a fixed height like: “height: 500px;” does work.
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Can anyone tell me how to get “height: 100%;” working on these child elements in this situation? Or how to get these ‘fields’ to be the full height of the parent container I mention?
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webpage example

2

This is the link to image:

https://imgur.com/jHryGSn

I thought the post should be written in html, that’s why you see the <br> tags. Turns out no html is needed. If I try to edit the post I get an 404 error.

Added the link to the image in the original post as well, but it is not shown. So here it is.

4

You must give the height to the TD tag, as well as the background color.