Variable Price Button Problem

Hi,

The variable price button has the text ‘choose an option’ flowing out of the button. The text must be inside the button. Also, the clickable area of the button has shifted to the left. so when I click on the button, the dropdown does not appear but when I click on the left side of the button (not the button) then the drops down with the variables appear. How can I resolve this? I have also disabled the ajax option.

The page I need help with: [log in to see the link]