Created attachment 61708 [details]
Screenshot

@Florian:
can you please check?

I tried to change the graphics and remove the text. Is it better now?

Distance to contents is better now.
But only Paypal icon remained?
Vertical alignment of amount and currency is different (currency higher), and currency field vertical size is too big (with FF and Seamonkey).

There's not much more I can out of the box, without adapting the extension. If someone has time, the current HTML template looks as follows:

$egSidebarDonateBoxContent = '
<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
        <p>
        <input name="lc" value="EN" type="hidden">
        <input name="cmd" value="_donations" type="hidden">
        <input name="business" value="paypal@documentfoundation.org" type="hidden">
        <input name="return" value="http://www.documentfoundation.org" type="hidden">
        <input name="undefined_quantity" value="0" type="hidden">
        <input name="item_name" value="The Document Foundation" type="hidden">
        <input name="amount" size="4" maxlength="10" value="10" style="text-align: right;" type="text">
                <select name="currency_code">
                        <option value="EUR">EUR</option>
                        <option value="USD">USD</option>
                        <option value="GBP">GBP</option>
                        <option value="CHF">CHF</option>
                        <option value="AUD">AUD</option>
                        <option value="HKD">HKD</option>
                        <option value="CAD">CAD</option>
                        <option value="JPY">JPY</option>
                        <option value="NZD">NZD</option>
                        <option value="SGD">SGD</option>
                        <option value="SEK">SEK</option>
                        <option value="DKK">DKK</option>
                        <option value="PLN">PLN</option>
                        <option value="NOK">NOK</option>
                        <option value="HUF">HUF</option>
                        <option value="CZK">CZK</option>
                        <option value="ILS">ILS</option>
                        <option value="MXN">MXN</option>
        </select>
        <input name="charset" value="utf-8" type="hidden">
        <input name="no_shipping" value="1" type="hidden">
        <input name="image_url" value="https://www.libreoffice.org/themes/libo/images/logo.png" type="hidden">
        <input name="cancel_return" value="http://www.documentfoundation.org" type="hidden">
        <input name="no_note" value="1" type="hidden"><br><br>
        <input src="https://www.paypalobjects.com/en_US/i/logo/PayPal_mark_60x38.gif" name="submit" alt="PayPal secure payments." type="image">
        </p>
        </form>
';

Feel free to modify, then I'll incorporate the changes.

Closing this as solved. I wasn't able to reproduce this problem on the wiki.

@Rainer should this be still happening, please add a link to the wiki-page this is happening on.

Also now, there's this dedicated donation page http://donate.libreoffice.org/ at the top right of every wiki top menu banner. So not sure if the left side bar should be cluttered with donation info if a dedicated page exists.