Navi über Design

Hallo
Wie bekomme ich meine Navi mittig über das Design ?
Und kann ich einen grösseren Header nehmen ?

vorab Vielen dank

<style type="text/css">
<!--
table.edit_main_table{width: 90% !important;}
table.edit_main_table, table[height="102"]{margin: 0 auto;}
td.edit_main_tr{width: 100% !important;}
table.edit_second_table{width: 100% !important;}
td.edit_header_full{width: 100% !important;}
td.edit_header_full table{width: 100% !important;}
table.edit_third_table{width: 100% !important;}
td.edit_navi_headbg{width: 5% !important;}
table.edit_rechts_tabelle{width: 100% !important;}
td.edit_rechts_bottom{width: 5% !important;position: absolute;left: -300px;}
td.edit_rechts_cbg{width:100%;}
td.shouty{visibility: hidden;width: 0px;}
td.edit_rechts_sbg{visibility:hidden;}
td.sidebar_heading{visibility: hidden;}
td.nav_heading{display: none}

td.headline2{visibility:hidden;}

td.edit_main_tr{height: 0px !important;}
td.edit_rechts_cbg{height: 0px !important;}
td.edit_rechts_bottom{height: 0px !Important;}
td.edit_navi_headbg{height: 0px !important;}

td.nav:hover{background-image: url();background-color:#ffffff;width:185px;height:25px;border-bottom: 1px solid #5E100C; border-right: 1px solid #5E100C;}

td.nav{background-image: url();background-color:#ffffff;width:185px;height:25px;border-bottom: 1px solid #5E100C; border-right: 1px solid #5E100C;}

tr.checked_menu td{background-image: url();background-color:#ffffff;width:185px;height:25px;border-bottom: 1px solid #5E100C; border-right: 1px solid #5E100C;}

td.edit_below_nav img{visibility: hidden;}
td.edit_below_nav{background-image: url();
background-position: center top;background-repeat: no-repeat;}

td.edit_content{background-image:url();background-color:#FFffff;border: 3px solid #ffffff;}

td.edit_content_top{display: none}

td.edit_rechts_cbg{background-image: url();}

td.edit_navi_headbg{background-image:url();background-color:#ffffff;border: 0px solid #ffffff;}

td.edit_rechts_sbg{background-image:url();background-color:#XXXXXX;border: 0px solid #ffffff;}

td.edit_rechts_bottom{background-image:url();background-color:#XXXXXX;border: 0px solid #ffffff;}

body {background-image:url();background-color:#ffffff;}
body {background-attachment:fixed;border: 0px solid #ffffff;}

td.edit_rb_footer{background-image:url();height: 20px;background-color:#5E100C;border: 0px solid #ffffff;}

td.edit_content_bottom2{background-image:url(URL);background-color:#XXXXXX;border: 0px solid #ffffff;}

td.edit_content_bottom{display: none}

td.nav a{font-family: arial;font-size: 12px;color: #5E100C;text-decoration: none}
td.nav a:hover{font-family: arial;font-size: 12px;color: #5E100C;text-decoration: none}
tr.checked_menu td a{font-family: arial;font-size: 12px;color: #5E100C;text-decoration: none}

td.edit_content_main div{overflow: hidden!important;}

td.edit_header_full{background-image:url(https://img.webme.com/pic/a/ac-druck/header8.png);background-color:#ffffff;width:
930; height: 125px;background-position: center top;background-repeat: no-repeat;border-left: 1px solid #ffffff; border-rightt: 1px solid #ffffff;border-top: 1px solid #ffffff;}

/* Textgröße + Textfarben Seiteninhalte */
td, div {font-size: 13px;font-family: arial, Times New Roman, Helvetica, Verdana, Comic Sans MS
, Courier New, Tahoma ;color: #000000; }

/* Linkfarben + Größen auf Seiten */
a:link {
color:#800000;
font-size:13px;
font-family:arial, Times New Roman, Helvetica, Verdana, Comic Sans MS
, Courier New, Tahoma;
text-decoration:none; }

/*Hover-Effekt bei Links*/
a:hover{
color:#800000;
font-size:13px;
font-family:arial, Times New Roman, Helvetica, Verdana, Comic Sans MS
, Courier New, Tahoma;
text-decoration:none;}

/* besuchte Links */
a:visited {
color:#800000;
font-size:13px;
font-family:arial, Times New Roman, Helvetica, Verdana, Comic Sans MS
, Courier New, Tahoma;
text-decoration:none;}
--></style>