Creating Equal-Height Columns with Flexbox
Flexbox makes it easy to create equal-height columns because flex items naturally stretch to fill the height of the container along the cross axis by default.
Set the container's display to flex.
Use align-items: stretch (default) to make all flex items stretch to the container's height.
Set flex-direction: row for horizontal columns.
Use gap for spacing between columns without affecting heights.
Ensure the container has a defined height or content that sets its height for stretching to take effect.
In this example, each .column stretches to match the height of the .container, ensuring all columns are equal height regardless of their content.