Probleme mit dem Stylesheet

#header {
background: #ffff99 url('images/kubrickheader.jpg') no-repeat bottom center;
}
#headerimg {
margin: 7px 9px 0;
height: 192px;
width: 890px;
}
#content {
font-size: 1.2em
}
.widecolumn .entry p {
font-size: 1.05em;
}
.narrowcolumn .entry, .widecolumn .entry {
line-height: 1.4em;
}
.widecolumn {
line-height: 1.6em;
}
.narrowcolumn .postmetadata {
text-align: center;
}
.thread-alt {
background-color: #f8f8f8;
}
.thread-even {
background-color: white; 
} 
.depth-1 {
border: 1px solid #ddd;
} 
.even, .alt {
border-left: 1px solid #ddd; 
}
#footer {
background: #eee url('images/kubrickfooter.jpg') no-repeat top;
border: none;
}
small {
font-family: Constantia, Helvetica, Sans-Serif;
font-size: 0.9em;
line-height: 1.5em;
}
h1, h2, h3 {
font-family: 'Constantia', 'Lucida Grande', Verdana, Arial, Sans-Serif;
font-weight: bold;
}
h1 {
font-size: 4em;
text-align: center;
}
#headerimg .description {
font-size: 1.2em;
text-align: center;
}
h2 {
font-size: 1.6em;
}
h2.pagetitle {
font-size: 1.6em;
}
#sidebar h2 {
font-family: 'Constantia', Verdana, Sans-Serif;
font-size: 1.2em;
}
h3 {
font-size: 1.3em;
}
h1, h1 a, h1 a:hover, h1 a:visited, #headerimg .description {
text-decoration: none;
color: white;
}
h2, h2 a, h2 a:visited, h3, h3 a, h3 a:visited {
color: #333;
}
h2, h2 a, h2 a:hover, h2 a:visited, h3, h3 a, h3 a:hover, h3 a:visited, #sidebar h2, #wp-calendar caption, cite {
text-decoration: none;
}
.entry p a:visited {
color: #b85b5a;
}
.commentlist li, #commentform input, #commentform textarea {
font: 0.9em 'Constantia', Verdana, Arial, Sans-Serif;
}
.commentlist li ul li {
font-size: 1em;
} 
.commentlist li {
font-weight: bold;
}
.commentlist li .avatar { 
float: right;
border: 1px solid #eee;
padding: 2px;
background: #fff;
}
.commentlist cite, .commentlist cite a {
font-weight: bold;
font-style: normal;
font-size: 1.1em;
}
.commentlist p {
font-weight: normal;
line-height: 1.5em;
text-transform: none;
}
#commentform p {
font-family: 'Constantia', Verdana, Arial, Sans-Serif;
}
.commentmetadata {
font-weight: normal;
}
#sidebar {
font: 1em 'Constantia', Verdana, Arial, Sans-Serif;
}
small, #sidebar ul ul li, #sidebar ul ol li, .nocomments, .postmetadata, blockquote, strike {
color: #777;
}
code {
font: 1.1em 'Courier New', Courier, Fixed;
}
acronym, abbr, span.caps
{
font-size: 0.9em;
letter-spacing: .07em;
}
a, h2 a:hover, h3 a:hover {
color: #06c;
text-decoration: none;
}
a:hover {
color: #147;
text-decoration: underline;
}
#wp-calendar #prev a, #wp-calendar #next a {
font-size: 9pt;
}
#wp-calendar a {
text-decoration: none;
}
#wp-calendar caption {
font: bold 1.3em 'Lucida Grande', Verdana, Arial, Sans-Serif;
text-align: center;
}
#wp-calendar th {
font-style: normal;
text-transform: capitalize;
}
/* End Typography & Colors */
 
/* Begin Structure */
body {
margin: 0 0 20px 0;
padding: 0;
}
#page {
background-color: #ffff99;
margin: 20px auto;
padding: 0;
width: 910px;
border: 1px solid #959596;
}
#header {
background-color: #73a0c5;
margin: 0 0 0 1px;
padding: 0;
height: 200px;
width: 908px;
}
#headerimg {
margin: 0;
height: 200px;
width: 100%;
}
.narrowcolumn {
float: left;
padding: 0 0 20px 45px;
margin: 0px 0 0;
width: 550px;
}
.widecolumn {
padding: 10px 0 20px 0;
margin: 5px 0 0 150px;
width: 550px;
}
.post {
margin: 0 0 40px;
text-align: justify;
}
.post hr {
display: block;
}
.widecolumn .post {
margin: 0;
}
.narrowcolumn .postmetadata {
padding-top: 5px;
}
.widecolumn .postmetadata {
margin: 30px 0;
}
.widecolumn .smallattachment {
text-align: center;
float: left;
width: 128px;
margin: 5px 5px 5px 0px;
}
.widecolumn .attachment {
text-align: center;
margin: 5px 0px;
}
.postmetadata {
clear: both;
}
.clear {
clear: both;
}
#footer {
padding: 0;
margin: 0 auto;
width: 910px;
clear: both;
}
#footer p {
margin: 0;
padding: 20px 0;
text-align: center;
}
/* End Structure */
 
/* Begin Headers */
h1 {
padding-top: 70px;
margin: 0;
}
h2 {
margin: 30px 0 0;
}
h2.pagetitle {
margin-top: 30px;
text-align: center;
}
#sidebar h2 {
margin: 5px 0 0;
padding: 0;
}
h3 {
padding: 0;
margin: 30px 0 0;
}
h3.comments {
padding: 0;
margin: 40px auto 20px ;
}
/* End Headers */
 
/* Begin Images */
p img {
padding: 0;
max-width: 100%;
}
/* Using 'class="alignright"' on an image will (who would've
thought?!) align the image to the right. And using 'class="centered',
will of course center the image. This is much better than using
align="center", being much more futureproof (and valid) */
img.centered {
display: block;
margin-left: auto;
margin-right: auto;
}
img.alignright {
padding: 4px;
margin: 0 0 2px 7px;
display: inline;
}
img.alignleft {
padding: 4px;
margin: 0 7px 2px 0;
display: inline;
}
.alignright {
float: right;
}
.alignleft {
float: left
}
/* End Images */
 
/* Begin Lists
Special stylized non-IE bullets
Do not work in Internet Explorer, which merely default to normal bullets. */
html>body .entry ul {
margin-left: 0px;
padding: 0 0 0 30px;
list-style: none;
padding-left: 10px;
text-indent: -10px;
}
html>body .entry li {
margin: 7px 0 8px 10px;
}
.entry ul li:before, #sidebar ul ul li:before {
content: "\00BB \0020";
}
.entry ol {
padding: 0 0 0 35px;
margin: 0;
}
.entry ol li {
margin: 0;
padding: 0;
}
.postmetadata ul, .postmetadata li {
display: inline;
list-style-type: none;
list-style-image: none;
}
#sidebar ul, #sidebar ul ol {
margin: 0;
padding: 0;
}
#sidebar ul li {
list-style-type: none;
list-style-image: none;
margin-bottom: 15px;
}
#sidebar ul p, #sidebar ul select {
margin: 5px 0 8px;
}
#sidebar ul ul, #sidebar ul ol {
margin: 5px 0 0 10px;
}
#sidebar ul ul ul, #sidebar ul ol {
margin: 0 0 0 10px;
}
ol li, #sidebar ul ol li {
list-style: decimal outside;
}
#sidebar ul ul li, #sidebar ul ol li {
margin: 3px 0 0;
padding: 0;
}
/* End Entry Lists */
 
/* Begin Form Elements */
#searchform {
margin: 10px auto;
padding: 5px 3px;
text-align: center;
}
#sidebar #searchform #s {
width: 108px;
padding: 2px;
}
#sidebar #searchsubmit {
padding: 1px;
}
.entry form { /* This is mainly for password protected posts, makes them look better. */
text-align:center;
}
select {
width: 130px;
}
#commentform {
margin: 5px 10px 0 0;
}
#commentform input {
width: 170px;
padding: 2px;
margin: 5px 5px 1px 0;
}
#commentform textarea {
width: 100%;
padding: 2px;
}
#respond:after {
content: ".";
display: block;
height: 0;
clear: both;
visibility: hidden;
}
#commentform #submit {
margin: 0 0 5px auto;
float: right;
}
/* End Form Elements */
 
/* Begin Comments*/
.alt {
margin: 0;
padding: 10px;
}
.commentlist {
padding: 0;
text-align: justify;
}
.commentlist li {
margin: 15px 0 10px;
padding: 5px 5px 10px 10px;
list-style: none;
}
.commentlist li ul li {
margin-right: -5px;
margin-left: 10px;
}
.commentlist p {
margin: 10px 5px 10px 0;
}
.children { padding: 0; }
#commentform p {
margin: 5px 0;
}
.nocomments {
text-align: center;
margin: 0;
padding: 0;
}
.commentmetadata {
margin: 0;
display: block;
}
/* End Comments */
 
/* Begin Sidebar */
#sidebar
{
padding: 20px 0 10px 0;
margin-left: 645px;
width: 240px;
}
#sidebar form {
margin: 0;
}
/* End Sidebar */