You can do this via the 'Custom HTML at top of every page:' setting, to have it at the very top of the page. If you want a Flash animation instead of the main site title, you will need to use an advanced theme to override the logo() function.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask in English.
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May 7, 2020: Q2A 1.8.4 released!