7.css is a CSS framework that replicates the look and feel of Windows 7 GUI elements. It allows developers to create web interfaces that mimic the classic Windows 7 style, providing a nostalgic and familiar user experience for those who fondly remember this operating system.

Pros

• Accurately recreates the Windows 7 aesthetic, including buttons, windows, and form elements
• Easy to implement with minimal setup required
• Customizable through CSS variables
• Lightweight and doesn't require JavaScript

Cons

• Limited to a specific design style, which may not be suitable for modern web applications
• May look outdated to users unfamiliar with Windows 7
• Lacks responsiveness for mobile devices out of the box
• Maintenance and updates may be infrequent due to the niche nature of the project

Code Examples

1. Basic button styling:

<button class="win7-btn">Click me</button>

2. Creating a window:

<div class="win7-window">
  <div class="win7-window-titlebar">Window Title</div>
  <div class="win7-window-content">
    <p>Window content goes here.</p>
  </div>
</div>

3. Styling a progress bar:

<progress class="win7-progress" value="70" max="100"></progress>

Getting Started

To use 7.css in your project, follow these steps:

1. Include the CSS file in your HTML:

<link rel="stylesheet" href="https://unpkg.com/7.css">

2. Add the appropriate classes to your HTML elements:

<div class="win7-desktop">
  <div class="win7-window">
    <div class="win7-window-titlebar">My Window</div>
    <div class="win7-window-content">
      <button class="win7-btn">Click me</button>
      <input type="text" class="win7-input" placeholder="Enter text">
    </div>
  </div>
</div>

3. Customize the appearance using CSS variables if needed:

:root {
  --win7-accent-color: #0078d7;
}