There’s a couple ways to do it, if you change the code on line 1978 to 16px top and bottom like this –
.header-image .site-header .widget-area {
padding: 16px 0;
}
It will look like this – http://i.imgur.com/wuh7ITE.png

If you’re ok with that, then that’s all you would need to do…..just let me know