Creating full width home page on Elegance Theme

functions.php

<?php
//* Do not add PHP opening tag. Copy the code below this line

add_action( 'genesis_header', 'elegance_header_wrapper_open', 4 );
function elegance_header_wrapper_open() {
  if( !is_front_page() )
    return;
    
  echo '<div class="site-header-container"><div class="wrap">' . "\n";
}

add_action( 'genesis_after_header', 'elegance_header_wrapper_close', 12 );
function elegance_header_wrapper_close() {
  if( !is_front_page() )
    return;
    
  echo '</div></div>' . "\n";
}

style.css

.home .site-container {
  max-width: 100%;
}