Why Do Firefox and Chrome Render Flexbox Differently, and How Can I Fix It?

Flexbox Rendering Disparities in Firefox and Chrome

In the realm of web development, cross-browser rendering issues can pose significant challenges. One such issue faced by Flexbox users is the inconsistent behavior observed in Firefox and earlier versions of Chrome.

In Chrome 47, the ".scroll" div functioned as expected, utilizing Flexbox to achieve 100% height. However, in Firefox, the same div adhered to the content height, resulting in improper scrolling behavior. This prompted the question of a cross-browser solution for this rendering discrepancy.

The modification of the flexbox specification, which set the default minimum size of flex items equal to the content, caused this rendering difference. To rectify this issue, developers can override this default by explicitly setting min-width and min-height to 0.

**.content {

background: yellow;
flex: 1;
display: flex;
flex-direction: column;

min-height: 0;           /* NEW */
min-width: 0;            /* NEW */

}
**

However, recent updates to Chrome have brought about a change in behavior. Chrome 48 emulates Firefox's previous rendering, resulting in the same solution being applicable in both browsers.

The initial auto value for min-width and min-height, as defined in CSS 2.1, has been replaced with the new auto value, which sets the minimum size to the size of the content. This has introduced a change in the default rendering behavior of flexbox elements, leading to the observed inconsistencies between browsers.

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