$cssPath = "site\assets\style.css"
$css = Get-Content $cssPath -Raw

# Remove the '}' I accidentally injected before /* Grid layout fixes */
$css = $css -replace "(?s)\}\s*/\* Grid layout fixes \*/", "/* Grid layout fixes */"

Set-Content -Path $cssPath -Value $css -Encoding UTF8
Write-Host "Removed rogue closing brace"
