Last checked and updated on April 16, 2026What Is New in Bootstrap 1.x
Bootstrap 1.0.0 introduces a foundational CSS framework designed to kickstart web development. It provides a robust grid system, base styles, and simple components to build upon.
| Category | Key Changes |
|---|---|
| New Features | Initial release featuring grid system, base CSS, and components. |
| Improvements | N/A - This is the initial version. |
| Bug Fixes | N/A - This is the initial version. |
| Deprecations | N/A - This is the initial version. |
What core features does Bootstrap 1.0 provide?
The initial release establishes the core pillars that Bootstrap would become known for. It's a comprehensive starting kit for front-end development.
Scaffolding & Grid
The framework includes a default 16-column, 940px-wide grid system. This provides the structural foundation for creating layouts without starting from scratch every time.
<div class="container">
<div class="row">
<div class="span8">...</div>
<div class="span8">...</div>
</div>
</div>Base CSS
It comes with styled typography, code, tables, and forms. These are sensible defaults that make basic HTML elements look polished and consistent across browsers.
- Typography styles for headings, paragraphs, and more
- Code blocks and inline code styling
- Pre-styled table layouts
- Form controls with consistent appearance
Components
Several reusable components are included out of the box. These are simple but effective building blocks for common interface patterns.
- Navigation tabs and pills
- Navbar for top navigation
- Alert messages for user feedback
How does the initial grid system work?
The 1.0 grid uses a fixed-width, 16-column structure. This differs from later versions but establishes the container-row-column pattern that became central to Bootstrap.
Containers hold rows, which in turn hold columns with classes like .span4. The math is simple: all spans in a row should add up to 16. This fixed system is predictable but less flexible than fluid grids that came later.
In practice, this grid was a huge time-saver compared to building custom layouts. It handled the float management and clearing that often caused cross-browser issues.
What browsers does Bootstrap 1.0 support?
Browser support focuses on modern browsers of the era with progressive enhancement. The framework works in IE7+, Firefox, Safari, and Chrome.
It uses CSS that degrades gracefully in older browsers. The approach is practical - it provides a good experience in modern browsers while remaining functional in older ones without complex polyfills.
FAQ
Is Bootstrap 1.0 a responsive framework?
No, the initial version uses a fixed-width 940px grid. Responsive design features with breakpoints and fluid layouts were introduced in later versions.
Does Bootstrap 1.0 include JavaScript components?
No, the 1.0.0 release is CSS-only. JavaScript plugins for interactive components like modals and dropdowns were added in subsequent releases.
How do I customize the 16-column grid?
You would need to modify the core CSS files directly. The concept of customizable Sass variables wasn't introduced until much later versions of Bootstrap.
What's the difference between .container and .container-fluid?
Only .container exists in 1.0, which creates a fixed-width container. The fluid container variant wasn't available until responsive features were added.
Are there any icon sets included?
No, Bootstrap 1.0 doesn't include any icon fonts or sprite sets. Developers needed to add their own icon solutions separately.