Quiero saber como hacer para sacr lo que me aparece

#pre_header {display: none;}

#post_header {display: none;}

#header_container {display: none;}

lli.nav_element{display: none;}

li.nav_element a{display: none;}

h1#title{display: none;}

h2#title span {display: none;}

#header {display: none;}

#title {display: none;}

#nav_container {display:none;}

table {margin-left:auto;margin-right:auto;}

html, body, div, span, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, code, del, dfn, em, img, q, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, textarea, input, select {margin: 0; padding: 0; border: 0; font-weight: inherit; font-style: inherit; font-size: 100%; font-family: inherit; vertical-align: baseline;}

table {border-collapse: collapse; border-spacing: 0;}

caption, th, td {text-align: left; font-weight: normal;}

table, td, th {vertical-align: middle;}

blockquote:before, blockquote:after, q:before, q:after {content: "";}

blockquote, q {quotes: "" "";}

a img {border: none;}

html {height: 100%;padding-bottom: 1px;}

body {background: #797E84 url("http://img37.imageshack.us/img37/2367/stripec089d75b31f4b949b.png");

color:#444;font:normal 80% sans-serif;line-height:1.5;}

h1,h2,h3,h4,h5,h6 {color:#555;font-weight:normal;line-height:1;margin-bottom:0.3em;}

h4,h5,h6 {font-weight: bold;}

h1 {font-size: 2.6em;}

h2 {font-size: 2em;}

h3 {font-size: 1.5em;}

h4 {font-size: 1.25em;}

h5 {font-size: 1.1em;}

h6 {font-size: 1em;}

p {margin-bottom: 1em;}

a:focus,a:hover {color: #000;}

a {color: #357;text-decoration: underline;}

abbr, acronym {border-bottom: 1px dotted #666;}

address {margin-bottom: 1.5em;}

blockquote {margin: 1.5em;}

del, blockquote {color: #666;}

em, dfn, blockquote, address {font-style: italic;}

strong, dfn {font-weight: bold;}

sup, sub {line-height: 0;}

pre {margin: 1.5em 0;white-space: pre;}

pre,code,tt {font: 1em monospace;line-height: 1.5;}

li ul, li ol {margin-left: 1.5em;}

ul, ol {margin: 0 1.5em 1.5em 1.5em;}

ul {list-style-type: disc;}

ol {list-style-type: decimal;}

dl {margin: 0 0 1.5em 0;}

dl dt {font-weight: bold;}

dd {margin-left: 1.5em;}

ul.tabbed {display: inline;margin: 0;}

ul.tabbed li {float: left;list-style: none;margin: 0;}

textarea {overflow: auto;}

input.text, textarea, select {background: #FCFCFC;border: 1px inset #AAA;padding: 4px 5px;}

input.text:focus, textarea:focus, select:focus {background: #FFFFF5;}

input.button {background: #F9F9F3;border: 1px outset #AAA;padding: 4px 5px;}

input.button:active {border-style: inset;}

.form_property, .form_value {float: left;}

.form_property {text-align: right;width: 110px;}

.form_value {padding-left: 24px;}

.form_row_submit .form_value {padding-left: 132px;}

.center,.aligncenter {display: block;margin-left: auto;margin-right: auto;}

img.bordered,img.alignleft,img.alignright,img.aligncenter {background-color: #FFF;

border: 1px solid #DDD;padding: 3px;}

img.alignleft, img.left {margin: 0 1.5em 1em 0;}

img.alignright, img.right {margin: 0 0 1em 1.5em;}

.left,.alignleft {float: left;}

.right,.alignright {float: right;}

.clear,.clearer {clear: both;}

.clearer {display: block;font-size: 0;line-height: 0;}

.content_separator, .archive_separator {background: #D5D5D5;clear: both;color: #FFE;

display: block;font-size: 0;height: 1px;line-height: 0;margin: 12px 0 24px;}

.archive_separator {margin: 0 0 14px;}

.post {margin-bottom: 24px;}

.post_title a,.post_meta a, .post_date a {text-decoration: none;}

.post_title a:hover,.post_meta a:hover, .post_date a:hover {text-decoration: underline;}

.post_date {border-top:1px solid #D5D5D5;color:#777;font-size:0.9em;padding:8px 0 12px;}

.post_date a {color: #444;}

.post_meta {background: #E7E7E7;border: 1px solid #D7D7D7;

color: #777;font-size: 0.9em;padding: 6px 10px;}

.post_meta a {color: #345; }

.post_meta a:hover {color: #001;}

.archive_pagination {margin-bottom: 1.6em;}

.archive_post {margin-bottom: 14px;}

.archive_post_title {padding-top: 3px;}

.archive_post_date {background:#FAFAFA;border-bottom:1px solid #C5C5C5;border-right:1px solid #CFCFCF;

float: left;margin-right:12px;padding: 2px 0 5px;text-align: center;width: 46px;}

.archive_post .post_date {border: none;padding:3px 0 0;}

.archive_post_day {font: normal 1.6em Georgia,serif;}

.thumbnails {margin: 0 0 1em -8px;}

.thumbnails a.thumb{background:#D5D5D5;display:block;float:left;margin:0 0 8px 8px;padding:3px;}

.thumbnails a.thumb:hover {background: #C0C0C0;}

.thumbnails .thumb img {display: block;}

.box {margin-bottom: 0.6em;}

.box_title 

 

 

{background: url("http://i10.servimg.com/u/f10/12/90/28/31/nnnnvi10.png") no-repeat center top;border-bottom: 1px solid #000000;color: #70767A;

font: bold 1.3em sans-serif;padding: 7px 10px 6px;}

 

 

 

.box_content {padding: 8px 0 8px;}

.box li:first-child {border-top: none;}

div.comment_list {border-top: 1px solid #D6D6D6; margin: 1em 0 2em;}

.comment {border-bottom: 1px solid #D6D6D6;padding-top: 10px;}

.comment_date {font-size: 0.9em;}

.comment_date a {color: #567;text-decoration: none;}

.comment_date a:hover {color: #001;text-decoration: underline;}

.comment_body {padding-top: 4px;}

.comment_gravatar {width: 48px;}

.comment_gravatar img {background: #FFF;border: 1px solid #DDD;padding: 2px;}

#layout_wrapper {background: url("") repeat-x;

padding-bottom: 16px;}

#layout_wrapper2 {background: url("") no-repeat center top;

padding-top: 10px;}

#layout_wrapper3 {background: #FFF;margin: 0 auto;width: 992px;   }

#layout_wrapper4 {padding: 6px;}

#header_wrapper {height: 200px;}

#head {padding: 48px 48px 0 48px;}

#site_title h1 {color: #A0C3D0;font-size: 2.5em;}

#site_title h1 a {color: #A0C3D0;text-decoration: none;}

#site_title h1 a:hover {color: #DDD;}

#site_title h2 {color: #999;font-size: 1.3em;}

#navigation {background: #000000 url("http://i10.servimg.com/u/f10/12/90/28/31/chema11.jpg") repeat-x;

margin-bottom: 3px;padding-top: 4px;}

#navigation a {color:#ffffff;display:block;font-weight:bold;text-decoration: none;}

#navigation a:hover {color: #ffffff;}

#nav li {border-right: 1px solid #54646C;}

#nav a {font-size: 1.0em;padding: 3px 6px;}

#nav a:hover {background: #000000;}

#nav li.current_page_item a {background: #000000;color: #FFF;}

#subnav {border-top: 1px solid #cdcdcd;background: #000000;}

#subnav li {border-right: 1px solid #50555A;}

#subnav a {font-size: 1.0em;padding: 4px 7px;}

#subnav a:hover {background: #5a5a5a;}

#main_wrapper {background: url("http://i10.servimg.com/u/f10/12/90/28/31/menuma10.png") repeat-y;

border-bottom: 1px solid #C3C4C1;margin-bottom: 3px;}

 

#main_wrapper {color: #535353;text-decoration: none;}

#main_wrapper :hover {color: #eaeaea;text-decoration: underline;}

 

 

#main {background: url("http://i10.servimg.com/u/f10/12/90/28/31/menuma10.png") no-repeat;padding: 24px 0;}

 

#content_wrapper {width: 690px;}

#content {padding: 0 20px;}

#sidebar_wrapper {width: 290px;}

 

 

#sidebar_wrapper  {color: #636363;text-decoration: none;}

#sidebar_wrapper  :hover {color: #ffffff;text-decoration: underline;}

 

 

#sidebar {padding: 0 18px;}

#dashboard_wrapper {}

#dashboard {background: #C9CDCF url("http://i10.servimg.com/u/f10/12/90/28/31/chema11.jpg") repeat-x;

border:1px solid #ACAFB0;color:#e1f8ff;margin-bottom:3px;padding: 16px;}

#dashboard .col3 {width: 288px;}

#dashboard .col3mid {width: 370px;}

#dashboard .col3mid .col3_content {border-left: 1px solid #ACAFB0;

border-right: 1px solid #B0B4B8;margin: 0 20px;padding: 0 20px;}

#dashboard .col_title {color: #606669;font-size: 1.5em;}

#dashboard ul {margin: 0;}

#dashboard li {border-bottom:1px solid #BABEBF;list-style:none;padding:5px 0;}

#dashboard li a {color: #ffffff;text-decoration: none;}

#dashboard li a:hover {color: #eaeaea;text-decoration: underline;}

#footer {background: #e3f1ff;border: 1px solid #CCC;padding: 8px 12px;}

#footer .right, #footer .right a {color: #777;text-decoration: none;}

#footer .right a:hover {color:#223;text-decoration: underline;}

* html #main, * html #dashboard {height: 0.01%; min-height: 0.01%;}