Calendar in classic-based theme

Hello everybody!

I can’t put a calendar on my sidebar. The theme is based on Buddha which is based on Classic Theme.

I put the get_calendar function in my sidebar and nothing happened… I tried a lot of different combinaisons but nothing….

I guess it comes from the structure of my CSS…

Could someone please check if there is a problem in it?

Here it is:
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[long code moderated – use a pastebin service]
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Thanks a lot in advance!

WP yours,

Tomka.