captcha input field not playing ball « Gravity Support Forums

I've targeted the fields with css, but am unable to correct the field overflow in captcha.
I've tried reducing the text field length shorter than I need to see if anything changes, but no look.
The page in question is:
http://engageclinical.co.uk/?page_id=15

This is the current css i'm using:

body .gform_wrapper .gform_body .gform_fields .gfield input[type=text] {background-color: rgba(200,232,251, .3);height:20px;width:270px!important;box-shadow: 0 1px 0 #E5E5EE;}

.gform_wrapper textarea {background-color: rgba(200,232,251, .3);height:20px;box-shadow: 0 1px 0 #E5E5EE;}

body .gform_wrapper .gform_body .gform_fields .gfield input[type=file] {background:#e9bbf8;height:20px;}

body .gform_wrapper .gform_body .gform_fields .gfield input[type=text],
body .gform_wrapper .gform_body .gform_fields .gfield input[type=email],
body .gform_wrapper .gform_body .gform_fields .gfield input[type=tel],
body .gform_wrapper .gform_body .gform_fields .gfield input[type=url],
body .gform_wrapper .gform_body .gform_fields .gfield input[type=number],
body .gform_wrapper .gform_body .gform_fields .gfield input[type=password],
body .gform_wrapper .gform_body .gform_fields .gfield select,
body .gform_wrapper .gform_body .gform_fields .gfield textarea,
body .gform_wrapper .gform_body .gform_fields .gfield .ginput_complex {
font-size:16px;
}

.recaptchatable #recaptcha_response_field {
    bottom: 7px !important;
    font-size: 10pt;
    margin: 0 !important;
    padding: 0 !important;
    position: absolute !important;
    width: 100px !important;
}

Any help will be greatly recieved.

Many Thanks
Bret