BuddyPress.org

I have add that(code is below), but I dont see any changes.

body {
width: 1000px;
background: #C5CBF7 none;

}

#leftSidebar {
width: 182px;
float: left;
padding: 20px 5px 20px 20px;
background: url( images/sidebar_back.gif ) top left repeat-x;
margin-top: 1px;
overflow: hidden;
border-right: 1px solid #e4e4e4;
}

#leftSidebar .widget {
margin-bottom: 20px;
}

#leftSidebar h3.widgettitle {
background: #eaeaea;
padding: 5px 15px;
font-size: 12px;
clear: left;
margin: 10px -4px 10px -20px;
}

#wp-admin-bar div.padder {
width: 1000px !important;
}

#content div.padder {
float: left;
width: 525px;
border-left: 1px solid #e4e4e4;
margin-right: 226px;
border-right: 0px solid #e4e4e4;
-moz-border-radius-topleft: 0px;
-webkit-border-top-left-radius: 0px;
-moz-border-radius-bottomleft: 0px;
-webkit-border-bottom-left-radius: 0px;
margin-left: -1px;
}

div.post div.post-content, div.comment-content {
margin-left: 0px;

#header {
height: 160px;
background-repeat: no-repeat;
background-position: left;
}

ul#nav {
position: absolute;
left: 15px;
bottom: 0;
max-width: 1000px;
font-size: 14px;
height: 25px;
overflow: hidden;
}