It took eighteen years.

On April 12, 2005, a bug was reported in version 1.0 of the Firefox browser and it has only just been fixed by Mozilla, according to an article by NextINpact.

The issue was related to text rendering and more specifically to a style description.

Thus, a large capital letter applied to the first letter of a text was not displayed correctly.


CSS::first-letter margin works differently in Firefox than in Chrome/Safari (see on this page https://t.co/JoeQsUDmku).



margin: -2.4rem 0.25rem -2.5rem 0 pic.twitter.com/0Oe4ZdXRIB

— Šime (@simevidas) December 10, 2021

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In question: the interpretation of a CSS (cascading style sheets in English or cascading style sheets in French).

This computer language is used to format an Internet page.

Except that these CSS are interpreted differently depending on the browser used.

Thus, the problem appeared with the pseudo-element “CSS::first-letter”.

A new version in February

A report had been made.

Its author explained: “When a: first-letter is left floating, Gecko (the system that will interpret the computer code and transform it into a visual) ignores the declared line height and uses that of the parent box.

[Unlike Firefox, Editor's note], Opera 7.5+ and Safari 1.0+ both handle this situation correctly”.



A significant problem for many websites, which use a large first letter (a drop cap) at the beginning of their text.

It therefore appeared correctly on all browsers, except Firefox.

After eighteen years of waiting, this bug, considered non-priority, was finally fixed on December 20th.

Its correction should be visible during the deployment of Firefox 110, next February.

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