Hi,
i find this way :
1- download this plugin : https://github.com/svivian/q2a-widget-anywhere
than you can choose where you want to show your button
2- add this code inside the widgets when you activate the plugin and remplace the red text
<!-- Identify your business so that you can collect the payments. -->
<input type="hidden" name="business"
value="xxxxxxxxxx@xxxxx.com"> // your email here
<!-- Specify a Donate button. -->
<input type="hidden" name="cmd" value="_donations">
<!-- Specify details about the contribution -->
<input type="hidden" name="item_name" value="add you title here"> // Header title
<input type="hidden" name="item_number" value="add the reason here"> // Slogan
<input type="hidden" name="currency_code" value="USD"> // Currency
<!-- Display the payment button. -->
<input type="image" name="submit" border="0"
alt="PayPal - The safer, easier way to pay online">
<img alt="" border="0" width="1" height="1"
</form>
That it !
Claude