How Can I Make a Flexbox Child Element Fill Available Vertical Space?

Flexbox: Filling Vertical Space Effectively

In a Flexbox row, it's possible to utilize the flex property to distribute the available horizontal space among child elements. However, extending this concept vertically presents a challenge.

The Issue: Filling Vertical Space

In a vertical Flexbox layout, the typical dilemma is that the child element that needs to fill the remaining space lacks a defined height, resulting in the elements appearing one below the other.

Solution: Aligning Content Vertically with Flexbox

To address this, try the following approach:

1. flex-direction: column: Set this property for the parent Flexbox container.
2. flex: 1: Assign this value to the child element that should fill the vertical space.

Example:

Consider the following Flexbox layout:

<div>

And the associated CSS:

.row {
  display: flex;
  flex-direction: column;
  height: 100vh;
}
.flex {
  flex: 1;
}

This layout will ensure that the ".flex" element occupies the remaining vertical space within the parent ".row" container, which has a fixed height of 100vh (viewport height).

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