Issue keeping scaling elements inline
===

For some reason, I have immense difficulty at browser scaling.  Here's my dilemma:

I have a top bar, represented by the following code:

        .topbar {
            position: absolute;
            background: #232121;
            min-width: 800px;
            height: 111px;
            top:0;
            left: 0;
            right: 0;
            margin: 0 auto;
        }
Inside that topbar element, I have a logo, being created by a background image on an `a` attribute

        #logo {
            margin-top: 20px;
            background: #232121 url("images/logo.png") no-repeat right top;
            width:299px;
            height: 76px;
            display:inline-block;
            text-indent: -99999px;
        }
I then have a little login form to the right of that:

        .userLogin {
            display: inline;
            margin-left: 40px;
        }

There's also a div called Links...I've almost completely forgot what I'm using it for.

        #links {
            width: 100%;
            text-align:center;

        }

Here's the full HTML:

    <body>
        <div class="topbar"><div id="links">
           <a href="index.html" id="logo">Logo</a>
            <form action="index.html" method="POST" class="userLogin">
                <input type="text" value="email">
                <input type="password" value="password" />
                <input type="submit" value="Sign In" id="signin" />
            </form></div>
        </div>
    </body>

Now this creates the elements at the top of the page, and they scale properly when the browser width adjusts.  However, due to the fact that neither element is floating, I can't properly bring down the login form to be aligned with the logo.  I want both elements to be a fixed distance from one another, but I want them to still scale with the width of the page.

I have tried adding padding and margins to both elements...but they both go as one, which doesn't work since I'm trying to only move one down. 

Thanks for any suggestions. 