mi comicpress es un desastre!

[real]

hola espero no violar ninguna regla, pero si soy sincero estoy desesperado! miren el caso es que en mi pagina web que es esta: http://vivacecompany.com/

pueden ver como el banner simplemente no esta centrado ya intenté muchas cosas, pero igual no me funcionan... y en mi style.css dice esto:

/*
Theme Name: ComicPress Red
Theme URI: http://comicpress.org
Template: comicpress
Description: Child Theme for ComicPress 2.9.2.*
Author: Philip M. Hofer
Author URI: http://frumph.net/
Version: 1.1
.
The CSS, XHTML and design is released under GPL v3:
http://www.opensource.org/licenses/gpl-3.0.html
.
*/

@import url("../comicpress/style.css");

/* STANDARD TAGS */

body { text-align:auto }
div#estructura {
width:960px;
text-align:auto;
margin:0 auto;
}

#page-head {
background: #A72805 url(pix/banner.jpg) top center no-repeat;
height: auto;
margin: auto;
}

#page-wide {
width: 960px;
}

#page-foot {
background: #A72805 url(pix/banner.jpg) top center no-repeat;
height: auto;
margin: auto;
}

#header {
display: block;
background: url('images/header.png') top center repeat-y;
height: auto;
padding: auto;
}

#header .description {
display: block;
padding-left: auto;
padding-right: auto;
}

#menubar-wrapper {
background-color: Transparent;
background: url('images/menubar.png') top center no-repeat;
height: 60px;
font-weight: 700;
}

.menunav {
line-height: 60px;
padding-right: 30px;
}

.menubar a, .menunav a {
text-shadow: 2px 2px 4px #000;
text-transform: uppercase;
}

.menubar {
padding-left: 24px;
}

.menubar a {
font-size: 14px;
}

.menubar, .menunav {
margin: auto;
line-height: auto;
}

a.menunav-rss, .menunav-rss {
height: 40px;
width: 40px;
background: url('images/rss.png') top left no-repeat;
text-indent: -9999px;
padding: 0;
}

a.menunav-rss:hover {
background-color: Transparent;
background: url('images/rss.png') top left no-repeat;
background-position: -40px;
}

.menunav-prev a:hover {
background-color: Transparent;
color: #fcff00;
}

.menunav-next a:hover {
background-color: Transparent;
color: #fcff00;
}

.menubar ul li a.selected {
/*CSS class that's dynamically added to the currently active menu items' LI A element*/
background-color: Transparent;
color: #fcff00;
}

.menubar ul li ul li a.selected{
background-color: #b00;
color: #fff;
}

.menubar ul li a:hover {
color: #fcff00;
background-color: Transparent; /*background of menu items during onmouseover (hover state)*/
}

.menubar ul li ul li a:hover {
color: #fcff00;
background-color: #b00; /*background of menu items during onmouseover (hover state)*/
}

img.downarrowclass {
top: 16px;
}

#content-wrapper, #footer {
background: url('images/content-wrapper.png') top center repeat-y;
}

#subcontent-wrapper {
padding: 0 25px;
}

.narrowcolumn {
width: 480px;
}

#sidebar-undercomic .ComicPressComicDateWidget {
background: url('images/datebg.png') no-repeat;
width: 58px;
height: 70px;
display: inline-block;
margin-left: auto;
font-size: 18px;
padding-top: 12px;
color: #fff;
float: left;
text-shadow: 2px 2px 4px #000;
font-weight: 700;
}

#sidebar-undercomic #comic_navi_wrapper {
float: left; auto;
margin-top: auto;
}

#comic img, #wp-calendar-wrap {
-moz-box-shadow: 2px 2px 2px #888;
-webkit-box-shadow: 2px 2px 2px #888;
box-shadow: 2px 2px 2px #888;
}

h1, h2, h3 {
text-shadow: 1px 1px 1px #888;
}

h1, h2.post-title, h2.page-title, h2.pagetitle {
border-bottom: dotted 1px #700;
}

li.comment {
background: url('images/comments.png') repeat;
}

en verdad estoy mas que perdido! me podrian ayudar por favor necesito un alma generosa que se apiade de mi!