Guidance for Country Code Flags
ISO 3166 and Unicode CLDR define over 240 standard two-letter country codes, and it's common to represent those codes with flags. But it's not always obvious which flags go with which codes, or how they're supposed to be rendered. This page is a simple guide to help you choose and display country flags correctly. It contains:
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The Union Jack should take up a quarter of the flag's total area and match the ratio of the overall image. (See GB for more details.)
As of August 2021, the Taliban have taken over Afghanistan and replaced the Afghan national flag with their own white and black banner. However the new regime and its flag have yet to be accepted by the international community. You should continue using the tricolour flag for all purposes.
The Union Jack should take up a quarter of the flag's total area and match the ratio of the overall image. (See GB for more details.)
