It's more or less a typo.
The links have the appearance:
<a class="but claimbut" href="#">Make a Claim</a>
<a class="but quotebut" href="#">Get a Quote</a>
<a class="but newsbut" href="#">View all</a>
But nor the class="but", nor the classes "claimbut", "quotebut" or "newsbut" have the margin-top of 20px in it (and in general an <a> link has also no margin-top).
The class="button" has the margin-top of 20px! (but has also other properties).
By adding ...
... the first 2 columns are o.k., but not the last one. That's because the element above it is floated.
Then you can float the buttons too (without harm for the other two):
BTW: "Hey Guys" > Girls are welcome too?