The Postal Service has created guidelines to ensure USPS sites have a standardized look and feel to improve the overall customer experience.
The USPS Digital Style Guide covers proper branding, imagery, language, color palettes and typography, as well as widgets, templates, navigation buttons and other design features.
It also includes resources to ensure Postal Service sites comply with a federal law that requires online content to be accessible to people with disabilities.
The guide, which is available online, is searchable and regularly updated.