How can I adjust the footer size on the Empire theme?

Hi, I am curious as to whether their is a way to get the green footer to be the same size as the black box above and keep the columns evenly spaced inside the footer:

URL: Ashbrook Roofing Supplies LTD (ashbrook-test-site.myshopify.com)

Password: yeothu

Hi,

Add this CSS code
Online Store > Themes > Edit code > Assets > custom.css or theme.css

footer {
      max-width: 1400px;
    margin: 0 auto;
}

thankyou!

Thankyou for the above, i have tried to apply a CSS to round the bottom two corners, however this has not worked. Can you also look into that for me please?