width 100% issue

I’m having a small issue with my form styled with width:100%.

My wrap is 960px and when my for instance subject input is 100% is going over the wrap for some reason.

.wpcf7-form, .contact-wrap {
float: left;
width: 960px !important;
margin: 0px !important;
position: relative !important;
}
.contact-subject {
margin: 30px auto;
clear: both;
}
.contact-subject input, wpcf7-form-control, wpcf7-text {
width: 100%;
clear: both;
}

http://wordpress.org/extend/plugins/contact-form-7/