Website is not centered in Mozilla Firefox

Question

Hello,
Our website was designed by a developer with whom we no longer can get in touch with. We have a small issue and we just can not figure out how to resolve it so we are turning to you for assistance.
When you open our website http://nflalumnisouthflorida.org in Internet Explorer it is aligned properly in the center of the page, however when we open it in Mozilla Firefox it is displayed on the left side.
I am sure it is a simple oversight when it was originally developed, however we can not find the proper line in the code to correct this.
Please help.
Thank you in advance for your attention and assistance,
NFL Alumni South Florida Chapter Team

Answer 1

I have a related problem with weebly in Mozilla. The website itself is horizontally centered, but my menu (container) is not. Could someone help me? Thank you in advance !
<pre><nowiki>#nav-wrap .container {
clear: both;
overflow: hidden;
position: relative;
margin: 0 auto;
display: inline; /*allow the centering to work*/
#nav-wrap table {
display: inline; /*allow the centering to work*/
margin-left: 0 auto;
margin-right: 0 auto;
width: 100%;
margin-bottom: 0px;
margin-top: 15px;
#menu {
vertical-align: middle;
width: 100%;
text-align: center;
margin: 0;
#nav-wrap .container ul {
list-style: none;
display: inline;
#nav-wrap .container ul li {
list-style: none;
display: inline; /*allow the centering to work*/
margin-left: 10px;
margin-right: 10px;
#nav-wrap .container ul li a {
display: inline; /*allow the centering to work*/
font-family: 'Verdana';
color: #1379dc;
text-decoration: none;
padding: 5px 5px;
border: 0px;
list-style-type: none;
font-size: 16px;
#nav-wrap .container ul li#active a,
#nav-wrap .container ul li a:hover {
background: #de16a5;
font-family: 'Verdana';
color: #ffffff;
border: 0;
}</nowiki></pre>