Remove Sidebars from select pages

I am using the following code in my themes custom css area to allow me to control the width of my content vs sidebar. This works but applies the sidebar to every page. Can someone help me add parameters that would limit this to certain pages? :

#sidebar {
background: #fff;
border-left: 1px dotted #ccc;
padding: 0px 0px 10px 10px;
float: right;
width: 20em;
}

#content {
float: middle;
padding: 0px 0px 0px 0px;
width:832px;
}