Category: Expert Guide
Where can I find examples of flexbox-gen in action?
## The Ultimate Authoritative Guide to Flexbox-Gen: Where to Find Examples in Action
As a Data Science Director, my mandate extends beyond raw data analysis; it encompasses understanding and leveraging tools that drive efficiency and innovation in digital product development. One such area, often overlooked by those outside the direct development sphere, is the strategic application of **CSS Flexbox Layout**. While Flexbox itself is a powerful and ubiquitous layout module, the process of *generating* complex Flexbox arrangements can be time-consuming and prone to error. This is where **Flexbox-Gen** emerges as a critical tool, transforming the way developers conceptualize and implement responsive interfaces.
This comprehensive guide will delve deep into the world of Flexbox-Gen, specifically addressing the paramount question for any practitioner or decision-maker: **"Where can I find examples of flexbox-gen in action?"** We will explore its practical applications, its alignment with industry best practices, and its potential to reshape future web development paradigms.
### Executive Summary
The digital landscape is defined by its dynamic and responsive nature. Users access content across an ever-expanding array of devices, from ultra-wide desktop monitors to compact mobile screens. Crafting interfaces that adapt seamlessly to these varying resolutions is not merely a design preference; it is a fundamental requirement for user engagement and business success. **CSS Flexbox Layout** has become the cornerstone of modern responsive design, offering unparalleled flexibility and control over element alignment and distribution within a container.
However, the intricate nature of Flexbox properties, such as `justify-content`, `align-items`, `flex-grow`, `flex-shrink`, and `flex-basis`, can often lead to a steep learning curve and a laborious manual implementation process. This is precisely where **Flexbox-Gen** shines. Flexbox-Gen is not a single, monolithic software but rather a *category of tools and online generators* designed to visually or programmatically create Flexbox CSS code. These generators abstract away the complexities of direct CSS writing, allowing developers and designers to intuitively arrange elements and then export the corresponding, optimized Flexbox code.
This guide aims to provide an authoritative answer to the question of where to find **flexbox-gen in action**. We will explore this through:
* **A Deep Technical Analysis:** Understanding the underlying principles of Flexbox and how Flexbox-Gen tools leverage them.
* **Practical Scenarios:** Demonstrating real-world applications across various industries and use cases.
* **Global Industry Standards:** Examining how Flexbox-Gen aligns with and promotes best practices in web development.
* **Multi-language Code Vault:** Providing illustrative code examples in various contexts.
* **Future Outlook:** Discussing the evolving role and impact of Flexbox-Gen.
By the end of this guide, you will possess a profound understanding of Flexbox-Gen's capabilities and have a clear roadmap for discovering and implementing its power in your own projects.
### Deep Technical Analysis
To truly appreciate where to find **flexbox-gen in action**, we must first understand the foundational technology it empowers: **CSS Flexbox Layout**.
#### Understanding CSS Flexbox
Flexbox, short for Flexible Box Layout, is a one-dimensional layout model designed for arranging items in rows or columns. It provides a more efficient way to lay out, align, and distribute space among items in a container, even when their size is unknown or dynamic.
The core concepts of Flexbox revolve around two axes:
* **Main Axis:** The primary axis along which flex items are laid out. This can be a row (horizontal) or a column (vertical).
* **Cross Axis:** The axis perpendicular to the main axis.
Key Flexbox properties include:
* **On the Flex Container:**
* `display: flex;` or `display: inline-flex;`: This is the foundational property that turns an element into a flex container.
* `flex-direction`: Defines the main axis direction (e.g., `row`, `column`, `row-reverse`, `column-reverse`).
* `flex-wrap`: Controls whether flex items should wrap onto multiple lines or not (e.g., `nowrap`, `wrap`, `wrap-reverse`).
* `justify-content`: Aligns flex items along the main axis (e.g., `flex-start`, `flex-end`, `center`, `space-between`, `space-around`, `space-evenly`).
* `align-items`: Aligns flex items along the cross axis (e.g., `flex-start`, `flex-end`, `center`, `baseline`, `stretch`).
* `align-content`: Aligns a set of lines within a flex container when there are multiple lines (due to `flex-wrap: wrap;`) (e.g., `flex-start`, `flex-end`, `center`, `space-between`, `space-around`, `stretch`).
* **On the Flex Items:**
* `order`: Controls the order in which flex items appear in the flex container.
* `flex-grow`: Determines how much a flex item will grow relative to the others if there is extra space in the container.
* `flex-shrink`: Determines how much a flex item will shrink relative to the others if there is not enough space in the container.
* `flex-basis`: Defines the initial size of a flex item before the remaining space is distributed.
* `flex`: A shorthand for `flex-grow`, `flex-shrink`, and `flex-basis`.
* `align-self`: Allows individual flex items to override the `align-items` property of the container.
#### The Role of Flexbox-Gen
Given the extensive list of properties and their synergistic effects, manually crafting complex Flexbox layouts can be an iterative and error-prone process. This is where **Flexbox-Gen** tools come into play. These tools act as intelligent assistants, bridging the gap between visual design and functional CSS code.
Flexbox-Gen tools typically operate on one of two principles:
1. **Visual Editors/Generators:** These are web-based or standalone applications that provide a drag-and-drop interface or intuitive controls to arrange elements. Users manipulate visual representations of their layout, and the tool automatically generates the corresponding Flexbox CSS. Examples include:
* **Online Flexbox Generators:** Websites like "Flexbox Froggy" (though more for learning), "CSS-Tricks Flexbox Guide" with its visualizer, and dedicated online generators that offer a WYSIWYG experience.
* **Design Tool Plugins:** Integrations within popular design software (e.g., Figma, Adobe XD plugins) that allow designers to define Flexbox behavior within their design environment and export code.
2. **Code-Assisted Generators:** These tools might take code snippets or configuration parameters as input and generate more optimized or complex Flexbox structures. They often focus on specific layout patterns or offer advanced customization options.
**How Flexbox-Gen Works Under the Hood:**
At its core, a Flexbox-Gen tool translates user interactions or predefined rules into the correct CSS Flexbox properties. For instance:
* **Arranging items horizontally with even spacing:** A user might drag items into a row and select "Space Between" from a dropdown. The generator would then output:
css
.container {
display: flex;
justify-content: space-between;
flex-direction: row; /* often implied by default */
}
* **Creating a responsive card layout:** A user might define a container that holds several cards. They might specify that on larger screens, cards should be in a row with some spacing, and on smaller screens, they should stack vertically. The generator would then output a combination of Flexbox properties and potentially media queries:
css
.card-container {
display: flex;
flex-wrap: wrap; /* to allow stacking on smaller screens */
gap: 1rem; /* modern way to add spacing */
}
.card {
flex: 1 1 300px; /* grow, shrink, basis of 300px */
min-width: 250px; /* ensure it doesn't get too small */
/* ... other card styles */
}
/* For smaller screens, default stacking might be sufficient,
or explicit direction change could be applied via media query */
@media (max-width: 768px) {
.card-container {
flex-direction: column;
}
.card {
flex-basis: auto; /* allow cards to take full width when stacked */
}
}
The **key advantage of Flexbox-Gen** is its ability to:
* **Visualize Layouts:** Allowing for rapid prototyping and iteration without constant browser reloads.
* **Abstract Complexity:** Hiding the intricacies of CSS properties for less experienced developers.
* **Ensure Correctness:** Minimizing syntax errors and logical mistakes in Flexbox implementation.
* **Generate Optimized Code:** Often producing cleaner and more efficient CSS than hand-written code by beginners.
* **Facilitate Collaboration:** Providing a common visual language for designers and developers.
### 5+ Practical Scenarios: Where to Find Flexbox-Gen in Action
The true value of **flexbox-gen** is realized when we see it applied to solve real-world problems. Here are several practical scenarios where these tools are invaluable, and where you can observe their impact:
#### 1. E-commerce Product Grids and Listings
**Scenario:** An online retailer needs to display a grid of products, each with an image, title, price, and an "Add to Cart" button. The layout must be responsive, adapting to display more or fewer columns as the screen size changes.
**Flexbox-Gen Application:**
* **Visualizing the Grid:** A developer or designer can use a Flexbox-Gen tool to visually arrange placeholder boxes representing products. They can define the container as a flex container and set `flex-wrap: wrap;`.
* **Defining Item Behavior:** For each product item, they can set `flex: 1 1 250px;` (grow, shrink, basis of 250px). This means each product will try to be 250px wide, but will grow or shrink as needed to fill the available space and wrap to the next line when there isn't enough room.
* **Spacing:** Tools can easily implement `gap` or `justify-content: space-around;` for consistent spacing between products.
* **Resulting Code:** The generator outputs the necessary CSS for the product container and individual product elements, often including media queries to adjust the `flex-basis` or `flex-grow` for different breakpoints, ensuring optimal column count.
**Where to find examples:** Look at the product listing pages of major e-commerce sites (Amazon, Etsy, Shopify stores). While they might not explicitly use a *visual* Flexbox-Gen tool for their final production code, the underlying responsive grid behavior is a prime example of what Flexbox excels at, and what Flexbox-Gen tools simplify the creation of. You can also find demos on developer blogs showcasing responsive e-commerce layouts built with Flexbox.
#### 2. Dashboard and Admin Panel Layouts
**Scenario:** Building a complex dashboard with multiple panels: a sidebar for navigation, a header, a main content area, and potentially a footer or status bar. These elements need to maintain their relative positions and responsiveness.
**Flexbox-Gen Application:**
* **Hierarchical Layout:** A Flexbox-Gen tool can be used to define the overall page structure. The main body could be a flex column, with the header and content area as items. The content area itself could then be another flex container (e.g., a row with a sidebar and the main content).
* **Sidebar and Main Content Sizing:** Developers can specify fixed widths for sidebars (`flex-basis: 250px;`) and allow the main content area to grow and fill the remaining space (`flex-grow: 1;`).
* **Alignment within Panels:** `justify-content` and `align-items` can be used to align widgets or controls within individual panels.
* **Resulting Code:** The generator produces CSS for the main layout structure, ensuring that sidebars stay put while content resizes dynamically.
**Where to find examples:** Admin templates and dashboards are rife with Flexbox. Search for "admin dashboard UI kit" or "responsive admin panel template" on platforms like ThemeForest or GitHub. Many of these templates showcase well-structured layouts achieved with Flexbox, and their development likely involved tools that simplified the Flexbox generation process.
#### 3. Navigation Bars and Menus
**Scenario:** Creating a responsive navigation bar that displays links horizontally on larger screens and collapses into a hamburger menu on smaller screens.
**Flexbox-Gen Application:**
* **Horizontal Alignment:** The navigation list can be set as a flex container with `flex-direction: row;` and `justify-content: flex-end;` (or `space-between;` for a logo on the left).
* **Responsiveness:** The `flex-wrap: wrap;` property can be used, or more commonly, media queries are employed. A Flexbox-Gen tool can help visualize how items wrap or hide.
* **Hamburger Menu Logic:** While the hamburger menu's toggle functionality is JavaScript, the *layout* of the hidden menu (often a stacked list) can be generated using Flexbox properties, switching `flex-direction` to `column` within a media query.
* **Resulting Code:** Generates CSS for the navigation bar, ensuring links are spaced correctly and the layout adapts gracefully.
**Where to find examples:** Almost every modern website has a navigation bar. Observe how they behave on different screen sizes. Many framework component libraries (Bootstrap, Materialize CSS) offer pre-built navigation components that are Flexbox-powered, and their development process would benefit from Flexbox-Gen principles.
#### 4. Form Layouts
**Scenario:** Designing complex forms with labels and input fields that need to be neatly aligned, potentially in multiple columns, and responsive to screen size.
**Flexbox-Gen Application:**
* **Label-Input Pairing:** Each label-input pair can be a flex item within a form row. `align-items: center;` can ensure vertical alignment.
* **Multi-Column Forms:** The form container itself can be a flex container with `flex-wrap: wrap;`. Individual form rows or groups of fields can have a `flex-basis` defined to control how many columns appear.
* **Inline Labels:** For a more compact layout, labels can be placed next to inputs using Flexbox.
* **Resulting Code:** Produces CSS to align form elements precisely, improving readability and user experience.
**Where to find examples:** Look at registration forms, checkout pages, or any complex data entry forms on websites. Many SaaS applications also feature intricate forms where Flexbox is used for layout. Developers building custom form components often leverage Flexbox-Gen tools for quick setup.
#### 5. Card-Based Content Displays
**Scenario:** Presenting articles, blog posts, or user profiles in a visually appealing card format. Cards should have consistent heights and distribute evenly.
**Flexbox-Gen Application:**
* **Card Container:** The container holding the cards is a flex container (`display: flex;`, `flex-wrap: wrap;`).
* **Equal Height Cards:** If cards have varying content, Flexbox's `align-items: stretch;` (often the default for `align-items`) on the container helps ensure all cards in a row reach the same height. Individual card items can also use `flex-grow: 1;` to expand.
* **Spacing and Responsiveness:** Similar to product grids, `gap` or `justify-content` manages spacing, and `flex-basis` controls the number of columns.
* **Resulting Code:** Generates CSS for a flexible and aesthetically pleasing card layout.
**Where to find examples:** Blogs, news websites, portfolio sites, and social media feeds are prime examples. Search for "responsive card layout tutorial" and you'll find numerous examples, many of which would have been facilitated by a visual Flexbox-Gen tool during development.
#### 6. Image Galleries and Carousels (Layout Aspect)
**Scenario:** Creating a grid of images that can be displayed in a carousel or simply as a responsive gallery.
**Flexbox-Gen Application:**
* **Image Grid:** As discussed in product grids, Flexbox is excellent for creating responsive image grids.
* **Carousel Item Arrangement:** For the layout of carousel items, the carousel track can be a flex container with `display: flex;` and `flex-wrap: nowrap;`. Each image or content block within the carousel is a flex item. `flex-shrink: 0;` is crucial here to prevent items from shrinking and overlapping.
* **Resulting Code:** Generates CSS for the image arrangement within the gallery or carousel, ensuring they are aligned and sized appropriately.
**Where to find examples:** Photo-sharing websites, design inspiration platforms (Pinterest), and image-heavy websites. Many JavaScript carousel libraries use Flexbox for their internal item layout.
### Global Industry Standards and Best Practices
The adoption of **Flexbox-Gen** tools is not merely about convenience; it's about aligning with and promoting global industry standards in web development.
#### 1. Responsive Web Design (RWD)
Flexbox is a cornerstone of RWD. **Flexbox-Gen tools** directly contribute to RWD by simplifying the creation of layouts that adapt to various screen sizes. Industry best practice dictates that websites must be accessible and usable on all devices, and Flexbox-Gen tools empower developers to achieve this efficiently.
* **Standard:** The W3C's Responsive Web Design Guidelines emphasize fluid grids, flexible images, and media queries. Flexbox directly addresses fluid grids and flexible elements.
* **Flexbox-Gen's Role:** By abstracting Flexbox, these tools make implementing RWD principles more accessible, reducing the barrier to entry for creating adaptable interfaces.
#### 2. Performance Optimization
While not a direct feature of all Flexbox-Gen tools, the code they generate is often cleaner and more semantic than hastily written CSS. This can contribute to better performance.
* **Standard:** Web performance is a critical metric, impacting SEO, user engagement, and conversion rates. Optimized CSS leads to faster loading times.
* **Flexbox-Gen's Role:** Well-structured Flexbox code, often generated by these tools, can be more performant than older, more complex layout methods (like floats). Furthermore, modern generators may produce CSS that leverages newer features like `gap` property, which is more performant than margin-based spacing.
#### 3. Accessibility (A11y)
Flexbox plays a significant role in accessibility, particularly concerning content ordering and layout adaptability.
* **Standard:** WCAG (Web Content Accessibility Guidelines) emphasizes that content should be perceivable, operable, understandable, and robust. This includes ensuring content can be reflowed and accessed in different contexts.
* **Flexbox-Gen's Role:** By providing control over element order (`order` property) and flexible layouts, Flexbox-Gen tools can help developers create accessible interfaces. For example, developers can reorder content for visual presentation while maintaining a logical tab order for keyboard navigation. This requires careful implementation, but tools can facilitate the layout aspect.
#### 4. Developer Experience (DX) and Collaboration
The rise of tools that improve developer experience is a significant industry trend. Flexbox-Gen tools fall squarely into this category.
* **Standard:** Companies are increasingly investing in tools and practices that enhance developer productivity and satisfaction.
* **Flexbox-Gen's Role:** These tools reduce development time, minimize frustration with CSS layout, and foster better collaboration between designers and developers by providing a visual means of communication and code generation.
#### 5. Modern CSS Practices
As CSS evolves, tools that help developers adopt and leverage new features are crucial.
* **Standard:** The adoption of modern CSS features like Flexbox and Grid is now standard practice for professional web development.
* **Flexbox-Gen's Role:** These generators ensure that developers are using the latest and most effective layout techniques, moving away from legacy methods.
### Multi-language Code Vault: Illustrative Examples
To further solidify where **flexbox-gen** can be observed in action, here are code snippets illustrating common patterns that such generators would produce. These examples are presented in a way that would be found in developer documentation or within the generated output of a tool.
#### Example 1: Simple Row Layout with Spacing
**Scenario:** A horizontal list of navigation links.
Home
About Us
Services
Contact
css
/* Generated by a Flexbox-Gen tool */
.main-nav {
display: flex; /* Establishes flex container */
justify-content: space-around; /* Distributes space around items */
align-items: center; /* Vertically centers items */
padding: 1rem; /* Basic padding */
background-color: #f0f0f0;
border-bottom: 1px solid #ccc;
}
.main-nav a {
text-decoration: none;
color: #333;
padding: 0.5rem 1rem;
margin: 0 0.5rem; /* Alternative to gap for older browsers */
transition: color 0.3s ease;
}
.main-nav a:hover {
color: #007bff;
}
/* Responsive adjustment for very small screens */
@media (max-width: 576px) {
.main-nav {
flex-direction: column; /* Stack items vertically */
align-items: flex-start; /* Align to the start */
}
.main-nav a {
margin: 0.2rem 0; /* Adjust vertical margin */
width: 100%; /* Full width for stacked items */
text-align: center;
}
}
**Explanation:** A generator would allow users to select "Row" for direction, "Space Around" for justification, and then apply media queries for the mobile view, changing `flex-direction` to `column`.
#### Example 2: Card Grid with Responsive Columns
**Scenario:** Displaying blog post previews in a grid that adjusts columns based on screen size.
css
/* Generated by a Flexbox-Gen tool */
.card-grid {
display: flex;
flex-wrap: wrap; /* Allows cards to wrap to new lines */
gap: 1.5rem; /* Modern spacing between cards */
padding: 1rem;
}
.card {
flex: 1 1 300px; /* Grow, shrink, basis of 300px */
min-width: 250px; /* Minimum width to prevent extreme shrinking */
box-shadow: 0 2px 5px rgba(0,0,0,0.1);
border-radius: 8px;
overflow: hidden; /* Ensure content stays within rounded corners */
display: flex; /* Make card a flex container for internal layout */
flex-direction: column; /* Stack content vertically within the card */
}
.card img {
width: 100%;
height: 200px; /* Fixed height for images */
object-fit: cover; /* Ensure images cover the area without distortion */
}
.card h3, .card p {
padding: 1rem;
}
.card a {
display: block; /* Make link a block element */
text-align: center;
padding: 0.8rem;
background-color: #007bff;
color: white;
text-decoration: none;
margin-top: auto; /* Pushes link to the bottom if content varies */
}
/* Adjustments for different screen sizes */
@media (min-width: 768px) {
.card {
flex-basis: calc(50% - 1.5rem); /* Two columns */
}
}
@media (min-width: 1024px) {
.card {
flex-basis: calc(33.333% - 1.5rem); /* Three columns */
}
}
@media (min-width: 1200px) {
.card {
flex-basis: calc(25% - 1.5rem); /* Four columns */
}
}
**Explanation:** This is a classic Flexbox use case. A generator would allow users to set the container to `flex` and `wrap`, define the `flex` property for individual cards, and then apply media queries to adjust the `flex-basis` for different column counts. The `gap` property is a modern, efficient way to handle spacing.
#### Example 3: Sidebar and Main Content Layout
**Scenario:** A typical application layout with a fixed sidebar and a resizable main content area.
css
/* Generated by a Flexbox-Gen tool */
.app-layout {
display: flex;
min-height: 100vh; /* Ensure layout takes full viewport height */
}
.sidebar {
flex-shrink: 0; /* Prevent sidebar from shrinking */
width: 250px; /* Fixed width for the sidebar */
background-color: #333;
color: white;
padding: 1.5rem;
display: flex; /* Flex for internal sidebar layout */
flex-direction: column;
}
.sidebar h2 {
margin-top: 0;
}
.sidebar ul {
list-style: none;
padding: 0;
margin: 0;
}
.sidebar li {
margin-bottom: 0.8rem;
}
.sidebar a {
color: #ccc;
text-decoration: none;
display: block;
padding: 0.5rem 0;
}
.sidebar a:hover {
color: white;
}
.main-content {
flex-grow: 1; /* Allow main content to grow and fill available space */
padding: 1.5rem;
background-color: #f9f9f9;
overflow-y: auto; /* Allow scrolling if content overflows */
display: flex; /* Flex for internal main content layout */
flex-direction: column; /* Stack widgets vertically */
}
.main-content h1 {
margin-top: 0;
}
.widget {
background-color: white;
padding: 1rem;
margin-bottom: 1rem;
border-radius: 5px;
box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
/* Responsive adjustment: stack sidebar and content on small screens */
@media (max-width: 768px) {
.app-layout {
flex-direction: column;
}
.sidebar {
width: 100%; /* Full width */
height: auto; /* Auto height */
padding: 1rem;
}
.main-content {
padding: 1rem;
}
}
**Explanation:** This example demonstrates a common pattern where the parent container is a flex row. The sidebar is given a fixed width and `flex-shrink: 0`, while the main content takes up the rest of the space with `flex-grow: 1`. Media queries then transform this into a flex column for mobile.
### Future Outlook
The trajectory of web development is one of increasing abstraction, efficiency, and visual tooling. **Flexbox-Gen** is not a fleeting trend but a manifestation of this evolution.
#### 1. Deeper Integration with Design Systems
As design systems become more sophisticated, **Flexbox-Gen tools** will likely become even more tightly integrated. Imagine a design system component library where you can visually configure Flexbox properties for a button group or a card component, and the underlying code is automatically generated and maintained within the system. This blurs the lines between design and development even further.
#### 2. AI-Powered Layout Generation
The future may see AI-driven Flexbox-Gen tools. These tools could analyze a rough sketch or even a natural language description of a desired layout and generate optimized Flexbox CSS. This would democratize complex layout creation significantly.
#### 3. Enhanced Visual Debugging and Prototyping
Future iterations of Flexbox-Gen could offer advanced visual debugging capabilities, highlighting issues with layout, spacing, or responsiveness directly within the visual interface, complementing browser developer tools. They will also become even more powerful for rapid prototyping, allowing for quick iterations of layout ideas.
#### 4. Synergy with CSS Grid and Other Layout Modules
While Flexbox is excellent for one-dimensional layouts, CSS Grid excels at two-dimensional layouts. **Flexbox-Gen tools** will likely evolve to offer integrated solutions for both, allowing users to seamlessly combine Flexbox and Grid within a single interface to create highly complex and responsive designs.
#### 5. Increased Adoption in Low-Code/No-Code Platforms
Low-code and no-code platforms are already leveraging visual layout builders. As these platforms mature, their integration with advanced CSS layout modules like Flexbox, facilitated by tools akin to Flexbox-Gen, will become even more robust, enabling users with minimal coding knowledge to build sophisticated interfaces.
### Conclusion
The question, **"Where can I find examples of flexbox-gen in action?"** can be answered definitively: everywhere modern, responsive web interfaces are built. From e-commerce product grids and complex dashboards to intuitive navigation bars and aesthetically pleasing card layouts, the principles and outputs of **Flexbox-Gen** are pervasive.
These tools, whether online visual generators, design tool plugins, or intelligent code assistants, are not just conveniences; they are essential accelerators for web development. They empower developers and designers to harness the full power of CSS Flexbox Layout with greater speed, accuracy, and efficiency.
As a Data Science Director, I recognize the strategic importance of tools that streamline workflows and enhance product quality. Flexbox-Gen embodies this principle by simplifying a fundamental aspect of modern web development. By understanding its applications, its alignment with industry standards, and its future potential, you are well-equipped to leverage this powerful category of tools to build superior digital experiences. The continuous evolution of these generators promises even more innovative and accessible ways to craft the web of tomorrow.
Article Title 1
A brief summary of the first article...
Read More
Article Title 2
A brief summary of the second article...
Read More
Article Title 3
A brief summary of the third article...
Read More
Article Title 4
A brief summary of the fourth article...
Read MoreWelcome to the Dashboard
This is the main content area where all the action happens.