POSTCSS-PRESET-ENV: La valeur finale a un support mixte, envisagez d'utiliser Flex-End à la place
/* If you're using (S)CSS or SASS, you have to write flex-start or
flex-end instead of start or
end respectively. */
/* convert */
justify-content: end;
/* into */
justify-content: flex-end;
Raviraj Solanki