Remove blank space in widget

Since last update, one of my text-widgets has a lot of extra blank space below the text. Probably because I'm using a position:relative-function on an image inside the same text-widget, since I want the image to be slightly 'out of the box'. The widget-background used to be wrapped around the text, but since last update it's not. Please see for yourself at www.lerenbeleggenvoorbeginners.com. It's the first widget on the right. Does anybody have a clue how to fix this? Thank you so much in advance!