body {
  position: absolute;
  margin-left: auto;
  margin-right: auto;
  left: 0;
  right: 0;
}

#domain-section,
#domain-offer-section,
#service-section,
#addons-wordpress-section,
#addons-section,
#payment-section,
#summary-section {
  position: relative;
  margin-left: auto;
  margin-right: auto;
  left: 0;
  right: 0;
}