<fontconfig>

  <alias>

    <family>sans-serif</family>

    <prefer>

      <family>Nafees Web Naskh</family>

    </prefer>

  </alias>

  <alias>

    <family>Nafees Web Naskh</family>

    <default>

      <family>sans-serif</family>

    </default>

  </alias>

</fontconfig>