Cómo reducir el ancho del body en CSS

body {
	background: #1a1a1a;
	margin: 0;
	padding: 0;
	font-family: Arial, sans-serif;
	font-size: 14px;
	line-height: 1.5em;
	color: #666666;
	text-align: justify;
}

body {
	background: #1a1a1a;
	margin: 0;
	padding: 0;
	font-family: Arial, sans-serif;
	font-size: 14px;
	line-height: 1.5em;
	color: #666666;
	text-align: justify;
}


#container {
	width: 960px;
	margin: 0 auto;
	background: url(images/containerbg.gif) #ebebeb;
	background-position: 0 140px;
	background-repeat: repeat-x;
}

#header {
	height: 90px;
	padding: 100px 20px 0 170px;
	background: url(images/headerbg.jpg);
	font-size: 12px;
	position: relative;
}

#posts {
	width: 650px;
	padding: 0 0 0 20px;
	margin: 0 0 20px 0;
	float: left;
}

#Rss {
	position: relative;
	top: -96px;
	right: -730px;
}	

#header h1 {
	margin: 0;
	font-size: 20px;
}

#header a {
	text-decoration: none;
	color: #666666;
}

#header a:hover {
	color: #333333;
}

#header #search {
	position: absolute;
	top: 150px;
	right: 20px;
	height: 20px;
}

#header #s {
	background: #ffffff;
	border: 1px solid #999999;
	color: #666666;
	width: 150px;
	margin: 0;
	font-size: 12px;
	color: #999999;
	padding: 2px;
}

#navbar {
	margin: 0 0 20px 0;
	background: url(images/navbg.gif);
	background-repeat: repeat-x;
	height: 30px;
}


#navbar ul {
	margin: 0;
	padding: 0;
	float: left;
	position: relative;
	left: 50%;
}

#navbar li {
	display: inline;
	float: left;
	position: relative;
	right: 50%;
	margin: 0 0 0 -1px;
}

#navbar a {
	display: block;
	float: left;
	height: 30px;
	padding: 0 30px;
        font-family: Comic Sans MS;
	font-size: 12px;
	color: #FFFFFF;
	text-decoration: underline;
	line-height: 30px;
}

#navbar a:hover, #navbar .current_page_item {
	background: url(images/navbghover.gif);
}


.commentbubble {
	position: relative;
	left: 530px;
	width: 71px;
}

.commentbubble a {
	display: block;
	background: url(images/commentbubble.gif);
	background-repeat: no-repeat;
	width: 40px;
	height: 75px;
	text-align: center;
	font-size: 12px;
	padding: 5px 31px 0 0;
}

.commentbubble a:hover {
	background: url(images/commentbubblehover.gif);
	background-repeat: no-repeat;
	width: 40px;
	height: 75px;
	text-align: center;
	font-size: 12px;
	padding: 5px 31px 0 0;
}

.date {
	width: 50px;
	height: 60px;
	border: 1px solid #cccccc;
	text-align: center;
	margin: 0 0 10px 0;
	float: left;
}

.month {
	font-size: 10px;
	background: url(images/navbg.gif) #aba000;
	background-repeat: repeat-x;
	background-position: 0 -5px;
	color: #ffffff;
	height: 20px;
	line-height: 20px;
}

.day {
	font-size: 22px;
	height: 25px;
	line-height: 30px;
	font-weight: bold;
}

.year {
	font-size: 10px;
	height: 15px;
	line-height: 15px;
}

.post {
	margin: 0 0 40px 0;
	background: #ffffff;
	padding: 20px;
	border: 1px solid #999999;
}

.tags {
	font-size: 11px;
	line-height: 1.5em;
	margin: 0 0 0 60px;
}

.entry {
	margin: 0;
	clear: both;
}

.entry p {
	margin: 0 0 20px 0;
}

.post h2 {
	font-size: 16px;
	font-weight: bold;
	font-family: Microsoft Sans Serif;
	color: #007071;
	margin: 0 0 5px 60px;
	border-bottom: 1px solid #cccccc;
}

.post h2 {
	text-shadow: #ccc 1px 3px 3px;
}

.post h2 a {
	color: #666666;
}

.post h2 a:hover {
	color: #008FD4;
}


.page .post h2 {
	font-size: 16px;
	font-weight: bold;
	margin: 0 0 5px 0;
	border-bottom: 1px solid #cccccc;

}

.post h3 {
	font-size: 14px;
	font-weight: bold;
	
}

.post a, .navigation a {
	color: #006F3A;
	text-decoration: none;
}

.post a:hover, .navigation a:hover {
	color: #008FD4;
}

.post img {
	border: none;
}

.postmetadata {
	font-size: 11px;
	line-height: 1.25em;
	margin: 0 0 0 60px;
}

.alignleft {
	float: left;
	margin: 5px 20px 20px 0;
}

.alignright {
	float: right;
	margin: 5px 0 20px 20px;
}

.aligncenter {
	display: block;
	margin: 0 auto 20px auto;
}

.alignnone {
	margin: 0;
}

.wp-caption.alignleft {
	float: left;
	margin: 5px 20px 20px 0px;
}

.wp-caption.alignright {
	float: right;
	margin: 5px 0 20px 20px;
}

.wp-caption.aligncenter {
	display: block;
	margin: 0 auto 20px auto;
}

.wp-caption.alignnone {
	margin: 20px 0;
}

.post .wp-caption {
	border: 1px solid #cccccc;
	background: #ebebeb;
	text-align: center;
	padding: 10px 5px 0 5px;
}

.post .wp-caption-text {
	margin: 0;
	font-size: 12px;
}

#commentform #author, #commentform #email, #commentform #url, #commentform #comment {
	background: #ffffff;
	border: 1px solid #cccccc;
	color: #666666;
}

.commentlist {
	list-style-type: none;
	margin: 0;
	padding: 0;
}

.commentlist li {
	background: #ebebeb;
	padding: 20px;
	border: 1px solid #cccccc;
	margin: 0 0 20px 0;
}

.avatarcontainer {
	float: left;
	margin: 0 5px 0 0;
}

.avatar {
	border: 1px solid #cccccc;
}

.commentdate {
	font-size: 11px;
}

.sidebar {
	margin: 0 0 20px 680px;
	width: 220px;
	background: #ffffff;
	padding: 20px;
	border: 1px solid #999999;
}

.sidebar ul {
	list-style-type: none;
	margin: 0 0 30px 0;
	padding: 0;
}

.sidebar h2 {
	margin: 0 0 5px 0;
	font-size: 16px;
	color: #58585A;
	width: 220px;
	border-bottom: 1px solid #cccccc;
        text-shadow: #ccc 1px 3px 3px;
}

.sidebar a {
	color: #008FD4;
	text-decoration: none;
}

.sidebar a:hover {
	color: #007071;
}

#footer {
	clear: both;
	height: 150px;
	background: url(images/footerbg.gif);
	background-repeat: repeat-x;
	border-top: 1px solid #999999;
}

#footer p {
	text-align: center;
	font-size: 12px;
	position: relative;
	top: 40px;
	margin: 0;
	padding: 0;
}

#footer a {
	color: #666666;
	text-decoration: none;
}

#footer a:hover {
	color: #333333;
}

#wp-calendar {
	width: 220px;
	background: #ebebeb;
	border: 1px solid #cccccc;
	margin: 0 0 30px 0;
	font-size: 12px;
	text-align: center;
}

#wp-calendar caption {
	text-align: left;
}

#wp-calendar #today {
	background: #cccccc;
}

#wp-calendar a {
	display: block;
	width: 100%;
	height: 100%;
}

#wp-calendar a:hover {
	background: #cccccc;
}