How Can I Create Fixed-Width Columns with a Flexible Center Using Flexbox?

Using Flexbox to Achieve Fixed-Width Columns with a Flexible Center

In web development, it's often necessary to create layouts with a combination of fixed-width and flexible-width columns. Flexbox provides a convenient solution for achieving this arrangement.

When aiming for fixed-width columns with a flexible center, the challenge lies in preventing the fixed-width columns from shrinking as the window size changes. Instead of relying on the width property, which is subject to scaling in flexbox, the preferred approach is to use a combination of flex-grow, flex-shrink, and flex-basis.

For instance, consider the following code:

.column.left {
    flex: 0 0 230px;
}

.column.right {
    flex: 0 0 230px;
}

In this code, the flex property consists of three values:

• flex-grow: 0 (i.e., don't grow)
• flex-shrink: 0 (i.e., don't shrink)
• flex-basis: 230px (i.e., start at 230px)

This effectively ensures that both the left and right columns always maintain a fixed width of 230px.

Additionally, it's worth noting that the justify-content and align-items properties can be omitted in this scenario, as their default values align with the desired behavior.

To handle the scenario where the right column needs to be hidden, the flex property remains the same, as it does not affect visibility. Instead, visibility can be toggled using JavaScript or CSS techniques such as:

#container {
    display: flex;
    max-width: 1200px;
}

.column.right {
    flex: 0 0 230px;
    border-left: 1px solid #eee;
    visibility: hidden;
}

In conclusion, by employing flex-grow, flex-shrink, and flex-basis, it's possible to create flexbox layouts with fixed-width columns while maintaining a flexible center that adapts to the available space.

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