Match Footer Width with Header Width

Do you want the footer wider or the header narrower?

The simplest thing to do is in the header settings change it from Full to Inset.

If you want the footer full width, then you would need this Custom CSS:

section[data-section-id="6373d8df1810f16bcca66873"] {
  .fluid-engine {
    --sqs-site-max-width:100vw;
  }
}