pourquoi je ne suis pas capable de mettre du fond perdu à mon document?

Welcome to the forum.

Also, if you can tell us which Adobe program you are using, a MOD can Move the post to the appropriate forum.

Good luck, and let us know more, please.

Hunt

Could you please post the link that led you to this forum address?

This forum is only to discuss how the forums operate, not products

If you start at the Forums Index http://forums.adobe.com/index.jspa

You will be able to select a forum for the specific Adobe product(s) you use

Click the "down arrow" symbol on the right (where it says ALL FORUMS) to open the drop down list and scroll