"Post comment" button blank

Please scroll to the bottom of the front page:
http://testsite.livejazzlounge.com

“Post comment” buttom is blank.

Pleas help me to edit border and text color to black.

Thanks!

LJL

Forget this.
I managed with this:

/* Controls colors of “Post Comment” button */
input[type=“submit”] {
background:#ffffff;
border:3px solid #ffffff !important;
color: #000000 !important;
}

/* Controls “Post Comment” button hover */
input[type=“submit”]:hover {
background-color:#ffffff !important;
color: #f2d25b !important;
}