Bottom margin of widgets

If you’re referring to the extra space at the bottom right before your footer, then that is the .site-inner which can be found near line 692 in your style.css file. If you don’t want to affect other pages, then I would add this to your css –

.home .site-inner {
clear: both;
padding-top: 0;
}

Ok so which one are you referring to? You mentioned in your first comment –

“How do I reduce bottom of Home Features and Middle 1 & 2 Widgets?”

And then in your second comment you mentioned this –

“Thank you for your posting but that is not what I want to know.
I would like to reduce space bottom of Home Features.”

These are two completely separate sections.

Are you referring to the space under the home middle 1 and home middle 2? – http://i.imgur.com/5RLoyf7.png

Or something different?

Yes thats what I was referring to in my recent comment. The code I provided above will decrease the space – http://i.imgur.com/wOfF2Wz.png

Once you add the code I mentioned earlier it will look just like this screenshot.