[Plugin: Insert JavaScript and CSS] Remove menu from a single page

I would like to remove the nav menu from just a single page (the “register” page) on my wordpress website.

I have installed the Insert JavaScript and CSS plugin to try and do this, using the following …

.home #main menu {display:none;}

… but to no avail. Does anyone have any suggestions? Any suggestions would be very welcome.

Pagee link: http://www.darroncarver.co.uk/shop/register

Thanks, Steph

http://ww.wp.xz.cn/extend/plugins/insert-javascript-css/