Footer: Reduce padding at the bottom of all pages above the footer

To reduce the padding at the bottom of pages above the footer, you can use this modification. 

Code:

/* -- code to reduce padding at bottom of template pages -- */
.main-content {
    padding-bottom: 0px;
}
/* - end - */

Where do I add the code?

Use this link to learn where exactly to add this code snippet:

Where to add your CSS style code