Sidebar stuck at bottom of page with last repeatable section--help

Question

I'm new to webpage creating. Here's my situation---I have a content section and then a sidebar on the right. The content section is repeatable. No matter what I do, the sidebar always aligns with the last repeatable section, meaning that it's often at the bottom of the page. The sidebar code looks like this---
        <div id="sidebar">
            <ul>
                    <h2>Primary Texts</h2>
                    <p><a href="primarytextsonline.html">Primary Texts Online</a></p>
                    <p><a href="manuscripts.html">Manuscript Resources</a></p>
            </ul>
        </div>
        <!-- end #sidebar -->
In case it matters, the code right before this dealing with the repeatable content section is:
          <!-- TemplateEndEditable --></div>
        </div>
        <div class="post">
          <div class="entry">
            <div class="entry-bgtop">
              <div class="entry-bgbtm"></div>
            </div>
          </div>
          </div>
        <div class="post"> </div>
        <div style="clear: both;"></div>
        </div>
    <!-- TemplateEndRepeat -->
All I want is for my sidebar to appear at the top, in line with the first chunk of text/content and stay there.

Answer 1

Full style sheet:
Design by Free CSS Templates
http://www.freecsstemplates.org
Released for free under a Creative Commons Attribution 2.5 License
body {
    margin: 0;
    padding: 0;
    background: #1B120B;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 12px;
    color: #787878;
h1, h2, h3 {
    margin: 0;
    padding: 10;
    font-family: Georgia, "Times New Roman", Times, serif;
    font-weight: normal;
    color: #CCCCCC;
h1 {
    font-size: 2em;
    color: #CCCCCC;
h2 {
    font-size: 1.8em;
    padding-top: 0px;
    padding-right: 0px;
    padding-bottom: 0px;
    padding-left: 0px;
h3 {
    font-size: 1.6em;
p, ul, ol {
    margin-top: 0;
    line-height: 150%;
ul, ol {
a {
    text-decoration: none;
    color: #CCCCCC;
a:hover {
#wrapper {
    margin: 0 auto;
    padding: 0;
    background: url(images/img05.jpg) repeat-x left top;
/* Header */
#header-wrapper {
#header {
    width: 960px;
    height: 100px;
    margin: 0 auto;
    background: url(images/img02.jpg) no-repeat left top;
/* Logo */
#logo {
    float: left;
    height: 240px;
    margin: 0;
    padding: 0px;
    color: #FFFFFF;
#logo h1, #logo p {
    margin: 0;
    padding: 0;
#logo h1 {
    float: left;
    padding-left: 25px;
    letter-spacing: -1px;
    text-transform: lowercase;
    font-size: 2.6em;
#logo p {
    float: left;
    margin: 0;
    padding: 12px 0 0 10px;
    font: normal 14px Georgia, "Times New Roman", Times, serif;
    font-style: italic;
#logo a {
    border: none;
    background: none;
    text-decoration: none;
    color: #FFFFFF;
/* Search */
#search {
    float: right;
    width: 279px;
    height: 110px;
    padding: 0;
#search form {
    height: 41px;
    margin: 0;
    padding: 10px 0 0 30px;
#search fieldset {
    margin: 0;
    padding: 0;
    border: none;
#search-text {
    width: 195px;
    padding: 6px 10px;
    border: 1px #4C4842 solid;
    background: none;
    text-transform: lowercase;
    font: normal 11px Arial, Helvetica, sans-serif;
    color: #808080;
#search-submit {
    display: none;
/* Menu */
#menu {
    width: 960px;
    height: 40px;
    margin: 0 auto;
    padding: 0;
    background: url(images/img03.jpg) repeat-x left top;
#menu ul {
    margin: 0;
    padding: 0px 0px 0px 25px;
    list-style: none;
    line-height: normal;
#menu li {
    float: left;
#menu a {
    display: block;
    height: 18px;
    margin-right: 3px;
    padding: 12px 40px 0px 40px;
    background: url(images/img06.jpg) no-repeat right 10px;
    text-decoration: none;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 12px;
    font-weight: normal;
    color: #FFFFFF;
    border: none;
#menu a:hover, #menu .current_page_item a {
#menu .current_page_item a {
    padding-left: 0;
#menu a:hover {
    text-decoration: underline;
/* Page */
#page {
    width: 960px;
    margin: 0 auto;
    padding: 0;
    background: url(images/img04.jpg) repeat-y left top;
#page-bgtop {
#page-bgbtm {
    padding-top: 0px;
    padding-right: 20px;
    padding-bottom: 0px;
    padding-left: 20px;
/* Content */
#content {
    float: left;
    width: 640px;
    padding: 0;
.post {
.post .title {
    height: 38px;
    letter-spacing: -0.5px;
    color: #181818;
    padding-top: 10px;
    padding-right: 0;
    padding-bottom: 0;
    padding-left: 20px;
.post .title a {
    color: #181818;
    border: none;
.post .meta {
    margin-top: -10px;
    padding-bottom: 0px;
    padding-left: 20px;
    text-align: left;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 11px;
    font-style: italic;
.post .meta a {
.post .entry {
    text-align: justify;
    margin-bottom: 25px;
    padding-top: 0px;
    padding-right: 20px;
    padding-bottom: 0px;
    padding-left: 20px;
.links {
    display: block;
    width: 130px;
    margin: 20px 0px;
    padding: 5px;
    background: #A03128;
    border-left: 20px solid #1B120B;
    text-align: center;
    text-transform: uppercase;
    font-size: 10px;
    color: #FFFFFF;
/* Sidebar */
#sidebar {
    float: right;
    width: 250px;
    padding: 10px 0px 0px 0px;
    color: #787878;
#sidebar ul {
    margin: 0;
    padding: 0;
    list-style: none;
#sidebar li {
    margin: 0;
    padding: 0;
#sidebar li ul {
    margin: 0px 15px;
    padding-bottom: 30px;
#sidebar li li {
    line-height: 35px;
    border-bottom: 1px dashed #D1D1D1;
    padding-left: 15px;
#sidebar li li span {
    display: block;
    margin-top: -20px;
    padding: 0;
    font-size: 11px;
    font-style: italic;
#sidebar h2 {
    height: 38px;
    padding: 12px 0 0 15px;
    letter-spacing: -.5px;
    color: #181818;
#sidebar p {
    margin: 0 0px;
    padding: 0px 20px 20px 20px;
    text-align: justify;
#sidebar a {
    border: none;
    color: #B94E0E;
#sidebar a:hover {
    text-decoration: underline;
/* Calendar */
#calendar {
#calendar_wrap {
    padding: 20px;
#calendar table {
    width: 100%;
#calendar tbody td {
    text-align: center;
#calendar #next {
    text-align: right;
/* Footer */
#footer-wrapper {
    width: 100%;
    background: #231202;
#footer {
    width: 960px;
    height: 100px;
    margin: 0 auto;
    padding: 0px 0 15px 0;
    font-family: Arial, Helvetica, sans-serif;
#footer p {
    margin: 0;
    padding-top: 40px;
    line-height: normal;
    font-size: 9px;
    text-transform: uppercase;
    text-align: center;
    color: #FFFFFF;
#footer a {
    color: #FFDBD9;