#commentform input[type="text"],
#commentform label.textarea {
    border-bottom-left-radius: 0;
    -moz-border-radius-bottomleft: 0;
    -webkit-border-bottom-left-radius: 0;
    -khtml-border-bottom-left-radius: 0;
}

#commentform input[type="text"],
#commentform textarea {
	border-top-left-radius: 0;
	-moz-border-radius-topleft: 0;
	-webkit-border-top-left-radius: 0;
	-khtml-border-top-left-radius: 0;
}