Underscores is a minimal starter theme designed for developers who want to build custom website themes from the ground up. It provides a clean, well-documented codebase that serves as a blank canvas, avoiding pre-defined styles and complex frameworks that can get in the way of a unique design.

Key features include:

• Lean HTML5 Templates: A just-right amount of modern, commented templates that provide structure without unnecessary markup.
• Organized Starter CSS: Smartly organized CSS in style.css gives you a solid starting point for your own styles without imposing a design.
• Custom Template Tags: Functions in inc/template-tags.php keep your template files clean and prevent code duplication for common tasks.
• Responsive Navigation: A JavaScript file (js/navigation.js) provides a basic toggle for menus on small screens, ready for your custom styling.
• Sample Layouts: Includes two sample CSS layouts in a layouts/ directory for sidebars on either side of the main content.