Form Styling CSS

Is there a specific place I should dump my Gravity Forms style code so I don’t corrupt the site css?

/************** Quote Forms **************************/

#quote-form {
width:600px;
background:#fefefe;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;

}

.quote-form-title {
margin-left: 10px;}

#gform_21,
#gform_24,
#gform_28,
#gform_18,
#gform_6,
#gform_4,
#gform_5,
#gform_1,
#gform_3{
width:600px;
background:#E8E1C7;
border:1px solid #8B7E4D;
-webkit-border-radius: 8px;
-moz-border-radius: 8px;
border-radius: 8px;
padding:15px;
-moz-box-shadow: 3px 3px 3px 0px #8E8565;
-webkit-box-shadow: 3px 3px 3px 0px #8E8565;
box-shadow: 3px 3px 3px 0px #8E8565;

}

.gform_wrapper .top_label .gfield_label {
color: #493B05;
font-family: “Lucida Grande”,”Lucida Sans”,”Lucida Sans Unicode”,sans-serif;
}

.gform_wrapper .gfield_checkbox li label, .gform_wrapper .gfield_radio li label,
gform_wrapper .ginput_complex label, .gform_wrapper .gfield_time_hour label, .gform_wrapper .gfield_time_minute label, .gform_wrapper .gfield_date_month label, .gform_wrapper .gfield_date_day label, .gform_wrapper .gfield_date_year label, .gform_wrapper .instruction {
color: #56460C;
font-family: “Lucida Grande”,”Lucida Sans”,”Lucida Sans Unicode”,sans-serif;
}

.gform_wrapper .gfield_checkbox li label, .gform_wrapper .gfield_radio li label {
color: #56460C;
font-family: “Lucida Grande”,”Lucida Sans”,”Lucida Sans Unicode”,sans-serif;
}

.gform_wrapper .gfield_required {
color: #493B05;
margin-left: 4px;
}

.gform_wrapper .gform_footer {
margin:16px 0 16px 0 !important;
}

/*.cat-content{
width:350px;
float:right;
background: url (‘http://exploreamor.com/images/ea-bullet.png’) left no-repeat;
}*/

.cat-post-list {
background-image: url(‘http://exploreamor.com/images/ea-bullet.png’);
background-repeat:no-repeat;
}

.cat-post-title {margin-left: 30px;}
.cat-post-title a {font-weight:bold; font-size: 1.1em;}

#callout .content-pad, .callout-area {padding-top: 0;}
#callout {margin-top: -30px;}

.register-section{
background: #E8E1C7;
border: 1px solid #8B7E4D;
-webkit-border-radius: 8px;
-moz-border-radius: 8px;
border-radius: 8px;
padding: 15px 0 15px 15px;
-moz-box-shadow: 3px 3px 3px 0px #8E8565;
-webkit-box-shadow: 3px 3px 3px 0px #8E8565;
box-shadow: 3px 3px 3px 0px #8E8565;
width: 45% !important;
}
.standard-form div.submit input {
margin: 40px;
}
.standard-form#signup_form div.submit {float: left !important}