Underscores is a minimal starter theme designed for developers who want to build custom website themes from the ground up. It provides a clean, standards-compliant codebase that serves as a blank canvas, avoiding the bloat and rigid structures of pre-built themes. This tool is ideal for experienced developers who need full control over their project's architecture and design.

Key features include:

• Lean, Modern Templates: A just-right amount of well-commented, modern HTML5 templates that follow best practices and avoid unnecessary markup.
• Organized Starter CSS: Smartly organized starter CSS in the main stylesheet helps you quickly establish a design foundation and build upon it efficiently.
• Custom Template Tags: A set of custom template tags keeps your template files clean, prevents code duplication, and promotes maintainable code structure.
• Responsive Navigation: Includes a JavaScript file for navigation that converts menus into a toggled dropdown on small screens, providing a responsive starting point.
• Sample Layouts & Code: Offers optional sample implementations, like custom headers and two sample CSS layouts, alongside core template functions to improve the theming experience.