Final list item in horizontal menu sits below the rest - css

Question

I am so ready to be done with this website, but I'm stuck on a couple things, one of which has me COMPLETELY stumped. I'm working with Dreamweaver CS6, but I am horrible with Adobe software in general (not a regular web developer!), so I'm just doing all the code myself. I have a menu bar running horizontally across the top of my page. The final link in the menu looks fine in the Dreamweaver preview, but when I check it out in browser(s), the last menu item is sitting below the rest. I tried to enter an image, but this is my first day on the website, so I haven't gathered enough reputation points. :shrug:
Here is my HTML code for the div:
<div id="nav1">
<ul>
<li>Home</li>
<li>FAQs</li>
<li>Rates</li>
<li>Contact Us</li>
<li>Portfolio</li>
</ul>
Here is the CSS. (Pardon the messy stuff; again, I'm just a newbie freelancing girl without a lot of experience. Side note: The percentages are due to the fact that I'm creating a responsive layout.)
#nav1 {
background-image:url(Images/NavBkgrnd.png);
width: 100%;
margin-top: 2%;
text-align: center;
word-spacing: normal;
}
#nav1 ul{
height: 30px;
padding: 8px 0px;
margin: 0px;
}
#nav1 li{
display: inline;
padding: 20px;
}
#nav1 li a{
color: rgb(255,255,255);
padding: 5px 5px 25px 5px;
width: 16.5%;
border-right: 1px solid rgb(51,51,51);
display:block;
float:left;
font: 400 12px/1.4 "Palatino Linotype",Verdana,Geneva,sans-serif;
font-weight:bold;
text-decoration: none;
text-transform: uppercase;
}
#nav1 a:hover{
color: rgb(0,0,0);
background-color: rgb(170,0,0);
}
#nav1 li a#visited {
background-color: rgb(170,0,0);
}
Can anybody point out errors that might be causing this crazy misalignment? I really wish I could've posted a picture. The website isn't live, so I can't post a link, either. But maybe it won't be necessary if you spot some issue with the code. Please help!
UPDATE: Answers below have solved the problem. Thanks for the speedy solutions, everyone.

Answer 1

The last li of the #nav1 needs to have its padding-top set to 0px. Try adding style="padding-top: 0px" or doing something like this.
#nav1 li:last-child {
padding: 0px !important;
}

Answer 2

Remove the padding from #nav1 li seems to fix it for me.
jsFiddle example

Answer 3

I made a few changes to your code.
First off, I set the <li> elements to have inline-block display, rather than inline display to apply the block style to the outermost element. Second, I set the 16.5% width to the <li> elements and made the <a> elements have 100% width.
Note that this also centered the nav bar.
Working JSFiddle

Answer 4

#nav1 {
background-image:url(Images/NavBkgrnd.png);
width: 100%;
margin-top: 2%;
text-align: center;
word-spacing: normal;
}
#nav1 ul{
height: 30px;
}
#nav1 li{
display: inline;
}
#nav1 li a{
color: rgb(255,255,255);
padding: 5px 5px 25px 5px;
width: 16.5%;
border-right: 1px solid rgb(51,51,51);
display:block;
float:left;
font: 400 12px/1.4 "Palatino Linotype",Verdana,Geneva,sans-serif;
font-weight:bold;
text-decoration: none;
text-transform: uppercase;
background-color: rgb(170,0,0);
}
#nav1 a:hover{
color: rgb(0,0,0);
background-color: rgb(170,0,0);
}
#nav1 li a#visited {
background-color: rgb(170,0,0);
}