Icon Box height

Hello

I’m using iconboxes across my site. They are displayed in a 5 column grid row. Each box has slightly different amonts of text, which makes the boxes different heights. I have tried to add white space to even them out. However whilst it look fin on my laptop, they are not equal heights on other devices.

How can i set the height of the icon boxes so they are the same height regardless of text?

I have pasted a link to an example page.

Thanks

Faye