The Blog Post summary padding/margin are OK but, as soon as I click on “Read More” (“Lire la suite” in French), padding and margin seem to be set to 0, which is quite odd.
Is there a way I kan keep the exact same padding/margin as in the Blog Post summary ?
There are separate settings for Summary and Full views. This is purposeful so that you can make adjustments to each separately depending on your design needs. Check the documentation: Blog Entries Documentation