body .gform_wrapper .gform_footer input.button,
body .gform_wrapper .gform_footer input[type=submit] {
color:#fff !important;
background-color: #000 !important;
border-radius: 30px !important;
-moz-border-radius: 30px;
-webkit-border-radius: 30px;
}

body .gform_wrapper .gform_footer input[type=submit]:hover {
border: 0px;
background-color: #009a1b !important;
}