Custom Community last 3 CSS

Can someone please help me center the three images on the bottom on the page? Been at this for hours with zero results. I have this code but dont know which file it’s located in:

div#content .padder {
border-left: medium none;
border-right: medium none;
margin-left: 0;
margin-right: 0;
min-height: 300px;
overflow: hidden;
padding-top: 30px;
}

Raydenconsulting.com

Please help.

Thanks