white box under captcha button

hello, so i’m using the contact form 7 plugin, and I’ve came across a little bug. After I’ve put my contact into a page there is this big white box under the captcha button:
https://gyazo.com/23509fcc56da960538325bb8f86e7462

here is how my contact form is configured:
https://elephate.gyazo.com/f17b84d0326879b9849884d661805caa

Does anyone know what might be a problem here? I would appreciate some help ??