I experiences some difficulties with the clickable areas of input fields (: ‘text areas’ and ‘drop down menus’). Standard, the clickable area is about 60% of the area. When I set style="width:100%" it works fine. I don’t know if this is a bug?
Without the 100% width, the clickable area ‘ends’ just after the two dashes in "–Kies een antwoord–); with the 100% width, the clickable area fills the complete ‘row’, including the arrow-down symbol (so without the 100% width, clicking on the arrow has no effect.