在垂直菜单的底部对齐图像

我目前正在为与之合唱的小组改组一个网站。我找到了一个垂直菜单。现在，我要公开地说菜单只是我发现的东西，因此它的编码以及CSS都不属于我。我做了一些调整，使它们适合我的需求。我想在菜单的最底部有一系列小图像。无论有人使用什么尺寸的台式机，我都希望他们能坚持到底。你们能给我的任何帮助将不胜感激。

www.spoken4quartet.com/test/index.html是我正在研究的网站。

#menu {
border-left: 3px solid #831111;
border-right: 3px solid #831111;
background: rgba(0, 0, 0, 0.75);
float: left;
font-size: 1.5em;
height: 100%;
margin-left: 1em;

}

#menu_contact {
vertical-align:bottom;

}

#menu li {
position: relative;
z-index: 1;

}

#menu li a {
display: block;
padding: 0.5em 1em;
white-space: nowrap;

}

#menu li ul {
    position: absolute;
    overflow: hidden;
    display: none;
    left: 100%;
    top: 0.5em;
    float: none;
    background-image: -moz-radial-gradient(0 50%, ellipse  farthest-side, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0) 100%);
    background-image: -webkit-radial-gradient(0 50%, ellipse  farthest-side, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0) 100%);
    background-image: radial-gradient(0 50%, ellipse  farthest-side, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0) 100%);
}

#menu li:hover ul {
    display: block;
}

#menu li ul a {
    position: relative;
    font-size: 0.8em;
}

#menu li ul a:hover:before {
    content: "";
    display: block;
    width: 1em;
    height: 1em;
    background: rgba(0,0,0,0.75);
    border: 1px solid #831111;
    position: absolute;
    top: 0.5em;
    left: -0.75em;
    -moz-transform: rotate(45deg);
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg);
}`

上面是CSS。以下是HTML

    <div id="menu">
<ul>
<li>
    <a href="#">Home</a>
</li>
<li>
    <a href="#">About Us</a>
    <ul>
        <li>
            <a href="#">Spoken 4</a>
        </li>
        <li>
            <a href="#">Jon Charles</a>
        </li>
        <li>
            <a href="#">Cecil</a>
        </li>
        <li>
            <a href="#">Brandon</a>
        </li>
        <li>
            <a href="#">Steven</a>
        </li>
    </ul>
</li>
<li>
    <a href="#">Schedule</a>
</li>
<li>
    <a href="#">Store</a>
</li>
<li>
    <a href="#">Media</a>
    <ul>
        <li>
            <a href="#">Photos</a>
        </li>
        <li>
            <a href="#">Videos</a>
        </li>
        <li>
            <a href="#">Audio</a>
        </li>
    </ul>
</li>
    <li>
    <a href="#">Promotion</a>
    </li>
<li>
    <li>
    <a href="#">Contact</a>
    </li>
</li>
</ul>
<div id="menu_contact">
<a href="https://www.facebook.com/Spoken4Quartet"><img src="images/facebook.png" ></a>
<a href="https://www.twitter.com/Spoken4Quartet"><img src="images/twitter.png" ></a>
<a href="mailto:[email protected]"><img src="images/email.png" ></a>
</div>
</div>