Arka plan rengi siyah tonda. Bunu diğer başka birşey ile değiştirmek istiyorum yalnız bir türlü değiştiremedim

Css

/*
Tasarim: Birebirde Basari Dershanesi
Version: 1.0
Aciklama: Birebirde Basari Dershanesi
Author: Birebirde Basari Dershanesi
*/
 

a:link { text-decoration: none; color: #DC2E2E; }
a:visited { text-decoration: none; color: #DC2E2E; }
a:hover, a:active { color: #C84028; }

h1, h2, h3, h4, h5, h6 { font-weight: normal; margin: 20px 0 10px; }
h1 { font-size: 32px; margin-bottom: 0px; margin-top: 10px;}
h2 { font-size: 28px; }
h3 { font-size: 24px; }
h4, h5, h6 { font-size: 20px; }

.titles { font-weight: normal; border-bottom-width: 0; font-size: 24px; text-decoration: none; underline: none;}
.titles a:link, .titles a:visited, .titles a:active {
text-decoration: none;
underline: none;
font-size: 24px;
font-weight: normal;
border-bottom-width: 0;
}
pre, blockquote 
{
 overflow: auto;
 padding: 0 10px;
 margin: 20px 30px;
 line-height: 1.8em;
 background-color: #f5f5f5;
 border: 1px solid #e0e0e0;
}
pre:hover, blockquote:hover
{
 background-color: #f0f0f0;
 border: 1px solid #d0d0d0;
}
pre { padding-top: 10px; padding-bottom: 10px; }
code { color: #779900; font-family: Consolas, Verdana, "Courier New", Sans-Serif; }
ul, ol { line-height: 2.0em; }
ul { list-style-image: url(images/bullet.gif); }
abbr, acronym { font-style: normal; border-bottom: 1px dotted #333333; cursor: help; }
del { text-decoration: line-through; color: #999999; }
ins { text-decoration: none; color: #009977; }

body
{
 margin: 0;
 padding: 0;
 color: #949494;
 background-color: #000000;
 font: normal 76% "Trebuchet MS", "Lucida Grande", Verdana, Georgia, Sans-Serif;
}
#wrapper2 {
width: 950px;
margin-left: auto;
margin-right: auto;
margin-top: 0px;
}
 
#navigation
{
 width: 950px;
 margin-left: auto;
 margin-right: auto;
 float: right;
 margin-top: 0px;
}
#headerbg {
background-image: url(images/header.jpg);
background-repeat: no-repeat;
background-position: top;
width: 970px;
height: 206px;
margin-top: 0px;
margin-left: auto;
margin-right: auto;
margin-top: 0px;
}
.categories {
width: 950px;
height: 40px;
background-color:#424242;
}
.categories ul {
list-style-type: none; list-style-image: none; float: left; height: 30px; margin: 0px 0px 0px 0px;
}
.categories li {
 float: left;
}
.categories li a:link,
.categories li a:visited
{
 float: left;
 color: #FFFFFF;
 display: block;
 padding: 5px 10px;
 margin-right: 1px;
 height: 25px;
 font-size: 12px;
 margin-top: 0px;
}
#wrapper
{
 clear: both;
 float: left;
 width: 100%;
 color: #777777;
 background-color: #E8E8E8;
 padding-top: 0px;
}
#content-wrapper
{
 width: 60%;
 float: left;
}
#content
{
 float: left;
 padding: 0 0px 10px 30px;
}
#sidebar-wrapper
{
 width: 35%;
 float: right;
 margin-top: 15px;
}
#sidebar
{
 float: right;
 padding: 0px 15px 10px 10px;
 width: 210px;
 margin-right: 15px;
 margin-top: 0px;
}
#footer
{
 clear: both;
 float: left;
 width: 930px;
 text-align: left;
 padding-left: 20px;
 color: #DC2E2E;
 font-size: 11px;
 padding-bottom: 10px;
 background-position: bottom;
 background-repeat: no-repeat;
 background-color: #E8E8E8;
 height: 50px;
 }
#footer a {
 color: #DC2E2E;
 font-size: 11px;
 }
#footer a: visited {
 color: #DC2E2E;
 }
#footer a:hover {
 color: #DC2E2E;
 }
#extras
{
 float: left;
 width: 780px;
 color: #C7AA92;
 text-align: left;
 padding: 0 10px 10px;
 margin: 10px 12px 20px;
 background-color: #f5f5f5;
 border-top: 1px solid #e0e0e0;
 border-bottom: 1px solid #e0e0e0;
}

#navigation h1 { margin-left: 20px; padding-top: 5px; float: left; font-size: 35px;}
#navigation h1 a { color: #FFFFFF;}

#navigation ul { list-style-type: none; list-style-image: none; float: left; margin-top: 8px; padding: 0px 0px 0px 0px; margin-left: 30px; }
#navigation li { float: left; }
#navigation li a:link,
#navigation li a:visited
{
 float: left;
 color: #FFF;
 display: block;
 padding: 20px 10px;
 margin-right: 1px;
 height: 24px;
 font-size: 13px;
 margin-top: 4px;
 font-weight: bold;
 background-image: url(images/nav-line.gif);
 background-repeat: no-repeat;
 background-position: right;
}
#navigation li a:hover,
#navigation li a:active
{
 color: #FFF;
 font-size: 13px;
 margin-top: 4px;
 background-image: url(images/nav-bg.gif);
 font-weight: bold;
 background-repeat: repeat-x;
}
#navigation li.active a
{
 color: #555555;
 background-color: #ffffff;
}

#wrapper a:link { font-weight: bold; }
#wrapper a:visited { font-weight: bold; }
#wrapper a:hover, #wrapper a:active { }

#content .post-title a { border-bottom-width: 0; }
#content .post p.img { float: left; margin: 0 15px 0 0; }
#content .post p.img img { padding: 8px; border: 1px solid #d0d0d0; background-color: #eeeeee; }
 

.sideblock
{
 padding: 5px 10px;
 margin-bottom: 20px;
 background-color: #FFFFFF;
 border: 1px solid #D0D0D0;
}
.post-wrapper {
padding-left: 30px;
padding-right: 30px;
padding-top: 10px;
padding-bottom: 0px;
width: 593px;
margin-left: -15px;
margin-top: 15px;
float: left;
background-color: #FFFFFF;
border: 1px solid #D0D0D0;
}
 
.sideblock ul { }
.sideblock h3 { margin-top: 5px; font-size: 16px; color: #424242; padding-top: 4px; padding-left: 10px; font-weight: bold; display: block; }
#sidebar dt { margin: 0; padding-top: 5px; font-weight: bold; color: #666666; }
#sidebar dd { margin: 0 0 5px; padding-bottom: 5px; line-height: 1.8em; }
#sidebar dd a:link { border-bottom-width: 0; font-weight: normal;  border-bottom: none; text-decoration: none;}
#sidebar dd a:visited { border-bottom-width: 0; font-weight: normal; border-bottom: none; text-decoration: none; }
#sidebar dd a:hover, #sidebar dd a:active { border-bottom: none; text-decoration: none;}

#extras h6 { font-size: 14px; text-transform: uppercase; color: #555555; }
#friends
{
 float: left;
 width: 150px;
 margin-left: 20px;
 margin-right: 10px;
}
#links
{
 float: left;
 width: 275px;
 margin-right: 50px;
}
#about
{
 float: left;
 width: 250px;
 margin-right: 20px;
}
#friends ul { padding-left: 20px; }
#links dl, #links dt, #links dd { margin: 0; padding: 0; }
#links dt { font-weight: bold; padding-top: 5px; }
#links dd { margin-bottom: 5px; padding-bottom: 5px; border-bottom: 1px dotted #999999; }
 
#commentlist li {
margin-bottom: 1.5em;
padding-bottom: 1em;
border-bottom: 1px solid #700000;
}
#commentform {
margin: 1em 0;
width: 280px;
}
#commentform textarea {
background: #FFFFFF;
border: 1px solid #d6d3d3;
width: 280px;
}
#commentform textarea:hover {
background: #FFFFFF;
border: 1px solid #d6d3d3;
}
#commentform textarea:focus {
background: #ffffff;
border: 1px solid #939793;
}
#commentform #email, #commentform #author, #commentform #url {
font-size: 1.1em;
background: #FFFFFF;
border: 1px solid #d6d3d3;
width: 280px;
}
#commentform #email:hover, #commentform #author:hover, #commentform #url:hover {
font-size: 1.1em;
background: #ffffff;
border: 1px solid #d6d3d3;
width: 280px;
}
#commentform #email:focus, #commentform #author:focus, #commentform #url:focus {
font-size: 1.1em;
background: #ffffff;
border: 1px solid #939793;
width: 280px;
}
#commentform input{
margin-bottom: 3px;
}
.date {
 background: url(images/date.gif) no-repeat;
 height: 56px;
 margin-bottom: 0px;
 width: 56px;
 text-align: center;
 float: left;
 margin-top: 15px;
}
.date .month {
 display: block;
 color: #FFD7C2;
 padding: 2px 0px;
 text-align: center;
 text-transform: uppercase;
 font-size: 10px;
 margin-top: 2px;
 font-weight: bold;
 margin-bottom: 3px;
}
.date .day {
 display: block;
 color: #FFFFFF;
 font: 2.3em Georgia;
 padding-top: 0px;
 text-align: center;
 margin-top: -12px;
}
.recent {
width: 271px;
height: 203px;
margin-left: 15px;
background-color: #FFFFFF;
border: 1px solid #D0D0D0;
padding: 10px;
float: left;
margin-top: 15px;
margin-bottom: 15px;
}
#left {
 width: 60px;
 float: left;
}
.slogan {
font-size: 17px;
color: #FF0002;
margin-left: 20px;
margin-bottom: 2px;
float: left;
margin-top: 5px;
}
.search_bg {
height:40px;
width:356px;
float: right;
margin-right: -60px;
margin-top: 37px;
}
#search {
vertical-align:top;
color:#000000;
padding:0;
}
#search input {
background: transparent;
font-size:11px;
color:#000000;
font-family:Tahoma, arial, verdana, courier;
width:150px;
height:22px;
vertical-align:middle;
margin: 10px 0px 0 10px;
padding:0;
border: none;
}
#search .input {
width:79px;
height:33px;
background:none;
border:none;
vertical-align:middle;
margin:0;
padding:0;
margin-left: 20px;
}
.recent-titles {
font-size: 18px;
margin-left: 10px;
margin-top: 10px;
color: #424242;
}
.recent2 {
width: 570px;
height: 520px;
margin-left: 15px;
background-color: #FFFFFF;
border: 1px solid #D0D0D0;
padding: 10px;
float: left;
margin-top: 15px;
margin-bottom: 15px;
}
#left {
 width: 60px;
 float: left;
}
.iletisim {
width: 580px;
height: 500px;
margin-left: 15px;
background-color: #FFFFFF;
border: 1px solid #D0D0D0;
padding: 10px;
float: left;
margin-top: 15px;
margin-bottom: 15px;
}
#left {
 width: 60px;
 float: left;
}

Nereyi değiştirmem gerekiyor ? Burayı denedim yalnız gene olmadı background-color: #000000;