If you have a website, you can insert a widget on it in order to follow the advancement of your campaign in real time and invite visitors to contribute.
On your project page, at the left of your main visual, you will see different options to share the page. The last icon is the one to get the widget code:
You will be able to preview the widget and get the iframe code to insert on your website.
Keep in mind that neither the size nor the display can be changed.