Bold Text In Widget

Hello sorry if this has been explained but i am new to this and can't seem to make sense of previous posts on the matter....

I have a form in the widget area of my genesis agentpress site:
http://s400558921.websitehome.co.uk/?listing=7-kelsey-street
but each of the field labels appear in bold and i would like the option to turn this off and generally alter the style.

I understand from other posts that i need to alter the css in the theme stylesheet but i can't seem to find the right code to do this...... i have found what looks like the code area for g.forms in the stylesheet, but altering this has been unsuccessful in facilitating change to the appearance of the form on the site.

here is the code i have found....

[css]
#content .gform_wrapper {
	background-color: #f5f5f5;
	overflow: hidden;
	margin: 0 0 20px;
	padding: 15px 20px 0;
	font-size: 13px !important;
}

div.gform_wrapper input,
div.gform_wrapper select,
div.gform_wrapper textarea {
	background-color: #fff;
	border: 1px solid #ddd;
	color: #555 !important;
	font-size: 11px !important;
	font-weight: normal !important;
	padding: 4px 5px !important;
}

div.gform_footer input.button {
	color: #fff;
}

div.gform_wrapper .ginput_complex label {
	font-size: 10px;
}

div.gform_wrapper li,
div.gform_wrapper form li {
	margin: 0 0 10px;
}

div.gform_wrapper .gform_footer {
	border: none;
	margin: 0;
	padding: 0;
}

please help,
Many Thanks

Karl

Perfect...Thankyou!!