for centos use httpd in apache
            to debug why vhost is not working try
                apache2ctl -S
            or
                httpd -S
        

    for xampp

    sudo mkdr /opt/lampp/apache2/conf/sites-enabled
    echo "IncludeOptional apache2/conf/sites-enabled/*.conf" >> /opt/lampp/apache2/conf/httpd.conf

    in etc_path config in browser add /opt/lampp
    in type text instead of apache2 enter xampp