Reply To: Remove white space above Footer.

20px is coming from line 1172 –

.slider .wrap {
    margin: 0 auto 20px;
    padding: 0;
    width: 1140px;
}

And the other 20px is coming from line 1178 –

.slider .widget {
    margin: 0 0 20px;
}

You can change the margin on both of those sections to margin: 0; if you’re not going to be using more than one widget inside of the slider area.