CSS new width for Recaptcha into WordPress CF7

I would like to have a recaptcha box large 200px, because it cover the second column and text overidden the left sidebar:

Visit http://ift.tt/1WvidDs and click into Scarica orange box.

My CSS code doesn't work:

   div.g-recaptcha {
    width: 200px !important;
}

Thanks in advance and best regards

via Chebli Mohamed