How does it differ from flexbox?

inline-block and flexbox are both CSS layout techniques, but they have different behaviors and use cases. Here are the key differences between them:

1. Layout Model:

Inline-Block: Elements with display: inline-block are laid out in a horizontal line, similar to inline elements, but they can have width, height, padding, and margins. The layout is determined by the content and the surrounding elements.
Flexbox: The flexbox layout model is designed for one-dimensional layouts (either row or column). It allows for more complex arrangements of items within a container, providing control over alignment, spacing, and distribution of space among items.

2. Alignment:

Inline-Block: Alignment of inline-block elements is limited to vertical alignment using the vertical-align property. This can be less flexible when trying to align items in different ways.
Flexbox: Flexbox provides powerful alignment options, including justify-content for horizontal alignment and align-items for vertical alignment. This allows for more precise control over how items are positioned within the flex container.

3. Direction:

Inline-Block: The direction of inline-block elements is always horizontal (left to right) unless the container is constrained by width.
Flexbox: Flexbox allows you to easily change the direction of items using the flex-direction property, enabling layouts to be arranged in rows or columns.

4. Responsive Design:

Inline-Block: While you can create responsive designs with inline-block, it may require more manual adjustments and calculations for spacing and alignment.
Flexbox: Flexbox is inherently more responsive, as it can automatically adjust the size and position of items based on the available space in the container.

5. Complex Layouts:

Inline-Block: Best suited for simpler layouts where elements need to be aligned horizontally with some control over size.
Flexbox: Ideal for more complex layouts, such as grids, navigation menus, and responsive designs, where items need to adapt to different screen sizes and orientations.

Example Comparison:

Inline-Block Example:

<div style="display: inline-block; width: 100px; height: 100px; background-color: lightblue; margin: 10px;">Item 1</div>
<div style="display: inline-block; width: 100px; height: 100px; background-color: lightcoral; margin: 10px;">Item 2</div>

Flexbox Example:

<div style="display: flex; justify-content: space-between;">
    <div style="width: 100px; height: 100px; background-color: lightblue;">Item 1</div>
    <div style="width: 100px; height: 100px; background-color: lightcoral;">Item 2</div>
</div>

Summary:

Use inline-block for simpler, horizontal layouts where you need some control over size and spacing.
Use flexbox for more complex, responsive layouts that require advanced alignment and distribution of space among items.