svc/contactform-bundle

assets/styles/layout/_svc-contactform.scss

.svc-contactform {
  width: 100%;
  max-width: 700px;
  padding: 15px;
  margin: auto;
  border-radius: 15px;
	box-shadow: 0 5px 5px rgba(0,0,0,.4);
}

config/packages/svc_contactform.yaml

svc_contactform:
    # Email adress for contact mails
    contact_mail:         dev@sv-systems.com

    # Which route should by called after amil sent
    route_after_send:     index

config/routes/svc_contactform.yaml

_svc_contactform:
    resource: '@SvcContactformBundle/src/Resources/config/routes.xml'
    prefix: /svc-contactform/{_locale}