Can you please help me so the footer color continues to the bottom of the page?

Hello,

When I noticed that the footer color on my site (http://wsbydesign.com) which is a golden color (#fcca11) ended and a white color appeared just above the bottom of the page, I made the following changes to the footer region's css, but nothing has changed.

.upfront-region-center {background-color: #fcca11;}
.upfront-region-side-left {background-color: #fcca11;}
.upfront-region-side-right {background-color: #fcca11;}
.upfront-region-container-bg {background-color: #fcca11;}

Can you let me know what I need to do to ensure the footer color continues to the bottom of the page?

I look forward to your response.

Thank you!
Kimberly