una ayuda por favor

<!-- wrap starts here -->
<div id="wrap">
<!--header -->
<div id="header">

<h1 id="logo-text"><a href="index.html"></a></h1>
<p id="slogan"></p>

<div id="header-links">
<p>
<a href="Url">Nombre del Link</a> |
<a href="Url">Nombre del Link</a>
</p>
</div>

</div>

<!-- menu -->
<div id="menu">



<ul>
<li id="current"><a href="Url">Nombre del Link</a></li>
<li id="current"><a href="Url">Nombre del Link</a></li>
<li id="current"><a href="Url">Nombre del Link</a></li>
<li id="current"><a href="Url">Nombre del Link</a></li>
<li class="last"><a href="Url">Nombre del Link</a></li>
</ul>
</div>

<!-- content-wrap starts here -->
<div id="content-wrap">

<div id="sidebar">




<div class="left-box">
<p class="align-right"></p>
</div>
</div>

<!-- content-wrap ends here -->
</div>
<!--footer starts here-->
<div id="footer">
</div>
<!-- wrap ends here -->
</div>

lli.nav_element{display: none;}
li.nav_element a{display: none;}
h1#title{display: none;}
h2#title span {display: none;}
div.header{display: none;}
li.nav_element{list-style-type: none;}
li.nav_element{display: none;}


/* Top Elements */
* { margin: 0; padding: 0; outline: 0 }

body {
background-image:url(FONDO);background-color:#ffffff;
font: 70%/1.5em Verdana, Tahoma, arial, sans-serif;
color: #555;
text-align: center;
}

/* links */
a, a:visited {
text-decoration: none;
color: #2180BC;
background: inherit;
}
a:hover {
color: #88ac0b;
background: inherit;
text-decoration: underline;
}

/* headers */
h1, h2, h3 {
font-family: 'Trebuchet MS', Tahoma, Sans-serif;
}
h1 {
font-size: 150%;
font-weight: normal;
color: #cccccc;
}
h2 {
font-size: 140%;
text-transform: uppercase;
color: #cccccc;
}
h3 {
font-size: 120%;
color: #cccccc;
}

h1, h2, h3, p {
padding: 10px;
margin: 0;
}
ul, ol {
margin: 5px 20px;
padding: 0 20px;
}


/********************************************
Design
********************************************/
#wrap {
width: 838px;
background: url(https://2img.net/h/oi35.tinypic.com/zlq93m.png) repeat-y center top;
margin: 0 auto;
text-align: left;
}
#content-wrap {
clear: both;
width: 760px;
padding: 0;
margin: 10px auto;
}
#header {
width: 838px;
position: relative;
height: 150px;
background: #fff url(URL ENCABEZADO) no-repeat center top;
padding: 0;

}
#header h1#logo-text a {
position: absolute;
margin: 0; padding: 0;
font: bolder 44px 'Trebuchet MS', Arial, Sans-serif;
letter-spacing: -2px;
color: #FFF;
text-transform: none;
text-decoration: none;
background: transparent;

/* change the values of top and left to adjust the position of the logo*/
top: 25px; left: 47px;
}
#header p#slogan {
position: absolute;
margin: 0; padding: 0;
font: normal 12px 'Trebuchet MS', Arial, Sans-serif;
text-transform: none;
color: #FFF;

/* change the values of top and left to adjust the position of the slogan*/
top: 70px; left: 55px;
}

/* header links */
#header #header-links {
position: absolute;
top: 20px; right: 30px;
color: #ffffff;
font-size: 10px;
}
#header #header-links a {
color: #FFF;
text-decoration: none;
}
#header #header-links a:hover {
color: #cccccc;
}

/* Menu */
#menu {
clear: both;
margin: 0 auto; padding: 0;
background: url(URL DEL MENU) repeat-x 0 0;
font: bold 12px/37px Verdana, Arial, Tahoma, Sans-serif;
height: 50px;
width: 838px;
}
#menu ul {
float: right;
list-style: none;
margin:0; padding: 0;
}
#menu ul li {
display: inline;
}
#menu ul li a {
display: block;
float: left;
padding: 0 12px;
color: #FFF;
text-decoration: none;
}
#menu ul li.last a {
padding-right: 20px;
}
#menu ul li a:hover {
color: #cccccc;
}
#menu ul li#current a {
color: #bc0303;
}

/* Main Column */
#main {
float: left;
width: 70%;
padding: 0; margin: 5px 0 0 5px;
display: inline;
}
#main h2 {
margin-top: 30px;
font: Bold 140% 'Trebuchet MS', Tahoma, Sans-serif;
color: #88ac0b;
padding: 5px 0 5px 25px;
border-bottom: 1px solid #EFF0F1;
background: #FFF url() no-repeat 3px 50%;
text-transform: none;
}
#main h2 a {
background: none;
color: #88ac0b;
text-decoration: none;
}

#main ul li {
list-style-image: url();
}

.post-footer {
background-color: #FAFAFA;
padding: 5px; margin: 20px 10px 10px 10px;
border: 1px solid #f2f2f2;
font-size: 95%;
}
.post-footer .date {
background: url() no-repeat left center;
padding-left: 20px; margin: 0 10px 0 5px;
}
.post-footer .comments {
background: url() no-repeat left center;
padding-left: 20px; margin: 0 10px 0 5px;
}
.post-footer .readmore {
background: url() no-repeat left center;
padding-left: 20px; margin: 0 10px 0 5px;
}

/* Sidebar */
#sidebar {
float: right;
width: 26.5%;
padding: 0; margin: 0;
color: #000;

}
#sidebar h3 {
margin-top: 10px;
padding: 20px 20px;
font: bold 1.4em 'Trebuchet MS', Tahoma, Sans-serif;
color: #bc0303;
}
#sidebar ul.sidemenu {
list-style: none;
text-align: left;
margin: 7px 4px 8px 0; padding: 0;
text-decoration: none;
background: url() repeat-x left top;
}
#sidebar ul.sidemenu li {
list-style: none;
background: url() repeat-x left bottom;
padding: 4px 0 4px 5px;
margin: 0 20px;
color: #bc0303;
}
* html body #sidebar ul.sidemenu li {
height: 1%;
}
#sidebar ul.sidemenu li a {
text-decoration: none;
background-image: none;
color: #666666;
}
#sidebar ul.sidemenu li a:hover {
color: #1773BC;
}
#sidebar ul.sidemenu ul { margin: 0 0 0 5px; padding: 0; }
#sidebar ul.sidemenu ul li { background: none; }


/* Footer */
#footer {
color: #C6DDEE;
background: url(URL DEL FOOTER) no-repeat center top;
clear: both;
width: 838px;
height: 76px;
text-align: center;
font-size: 92%;
}
#footer a {
color: #FFF;
text-decoration: none;
}

/* alignment classes */
.float-left { float: left; }
.float-right { float: right; }
.align-left { text-align: left; }
.align-right { text-align: right; }

/* display and additional classes */
.clear { clear: both; }