Hello, I'm working on a project and am trying to improve the look of my dropdown menus. Does anyone have any suggestions on how to better align anything? I know this is a general question, but any advice would be helpful. Thanks.

Code:
html:

<div class="navigation">
                      <ul class="menu5">
                        <li><strong><a href="index.html">Home</a></strong></li>
                        <li><a class="drop" href="about.html">About Us</a>
                          <ul>
                            <li><a href="about/financial.html">Financial Information</a></li>
                            <li><a href="history.html">History</a></li>
                          </ul>
                        </li>
                        <li><a class="drop" href="help.html">Help</a>
<ul>
                            <li><a href="about/financial.html">Financial Information</a></li>
                            <li><a href="history.html">History</a></li>
                          </ul>
                        </li>
                        <li><a class="drop" href="involvement.html">Involvement</a>
                          <ul>
                            <li><a href="about/financial.html">Financial Information</a></li>
                            <li><a href="history.html">History</a></li>
                          </ul>
                        </li>
                        <li><strong><a href="contact.html">Contact Us</a></strong></li>
                      </ul>
                    </div>




css: 
/*Navigation*/
.navigation {
	position: relative;
	display: block;
	width: 100%;
	background-color: #46a748;
	height: 2em;
	margin: -0.5em 0 0;
}
/* ================================================================ 
This copyright notice must be untouched at all times.

The original version of this stylesheet and the associated (x)html
is available at http://www.cssplay.co.uk/menus/drop_examples.html
Copyright (c) 2005-2007 Stu Nicholls. All rights reserved.
This stylesheet and the assocaited (x)html may be modified in any 
way to fit your requirements.
=================================================================== */
/* commom style for all browsers */

.menu5 {
	text-align: center;
	font-family: Arial, Helvetica, sans-serif;
	position: relative;
	font-size: 1.15em;
	height: 2em;
	margin: 0;
	list-style-type: none;
	padding-top: 5px;
	padding-bottom: 5px;
	padding-left: 3px;
}
.menu5 ul {
	width: auto;
	padding: 0;
	margin: 0;
	list-style-type: none; /* for Firefox */
}
.menu5 li {
	float: left;
	position: relative;
	width: auto;
}
.menu5 li a, .menu5 li a:visited {
	display: block;
	text-decoration: none;
	text-transform: none;
	width: auto;
	float: left;
	padding-right: 1em;
	height: 3em;
	line-height: normal;
	color: #543604;
}
* html .menu5 li a, .menu5 li a:visited {
	width: auto;
}
.menu5 li a.drop, .menu5 li a.drop:visited {
	font-weight: bold;
	width: auto;
	text-align: center;
}
.menu5 li ul {
	visibility: hidden;
	position: absolute;
	top: 2.5em;
	left: 0;
	height: 0;
	overflow: hidden;
	z-index: 1;
}
.menu5 table {
	margin:-1px;
	border-collapse:collapse;
	font-size:1em; /* font size for IE5.5 */
}
/* fist line style for IE7 and non-IE browsers and the second line for IE5.5 and IE6 */
.menu5 li:hover a, .menu5 li a:hover {
	text-decoration: none;
	border:0;
	background-color: #46a748;
}




.menu5 li:hover ul, .menu5 li a:hover ul {
	visibility:visible;
	height:auto;
	width:auto;
	background:#fff;
	border:1px solid #ddd;
	left:0;
	top:2.5em;
	overflow:visible;
	padding: 1em;
}
.menu5 li:hover ul li a, .menu5 li a:hover ul li a {
	display:block;
	font-weight:normal;
	background:transparent;
	text-decoration:none;
	height:auto;
	line-height:1em;
	padding:0.5em;
	width:8em;
}
* html .menu5 li a:hover ul li a {
	width:10em;
}
.menu5 li:hover ul li a.drop, .menu5 li a:hover ul li a.drop {
	font-weight:bold;
}
.menu5 li:hover ul li ul, .menu5 li a:hover ul li a ul {
	visibility:hidden;
	position:absolute;
	top:0;
	left:9.5em;
	height:0;
	overflow:hidden;
}
.menu5 li:hover ul li a:hover, .menu5 li a:hover ul li a:hover {
	text-decoration:none;
	background: #FF5B00;
	color: #FFC200;
}
.menu5 li:hover ul li:hover ul, .menu5 li a:hover ul li a:hover ul {
	visibility:visible;
	color:#000;
	border:1px solid #ddd;
	height:auto;
	background:#F2F5ED;
	width:10em;
	text-align:center;
}
.menu5 li:hover ul li:hover ul.left, .menu5 li a:hover ul li a:hover ul.left {
	left:-9.3em;
}
.menu5 li:hover ul li:hover ul li a, .menu5 li a:hover ul li a:hover ul li a {
	display:block;
	height:auto;
}
.menu5 li:hover ul li:hover ul li:hover a, .menu5 li a:hover ul li a:hover ul li a:hover {
	text-decoration:none;
}