Integrating your website layout with HostBill is easy, you can find some resources here:

• Documentation of smarty – temple engine used by HostBill: http://www.smarty.net/docsv2/en/language.builtin.functions.tpl
• Useful tips and tricks when integrating templates: https://hostbill.atlassian.net/wiki/spaces/DOCS/pages/1605773/Templates+Integrating+templates+-+tips+and+tricks