gulp build not minifying css

[chambleton]

hi - after running gulp build, if you open the build\css\main.min.css file in an editor like vs-code or Notepad++, it's not minified:

html { font-family: sans-serif; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; }

body { margin: 0; }

a { background-color: transparent; }