[BETEPAH]

.main {
    width: 520px;
}
.main:after {
content: ".";
display: block;
height: 0;
clear: both;
visibility: hidden;
}
.footer {
    height: 20px;
    background-color: #222;
    margin: 5px 0;
}
.left {
    width: 100px;
    height: 100px;
    background-color: #777;
    margin: 0 10px 0 0;
    border: 1px solid black;
}
.right {
    width: 400px;
}
.left, .right {
    float: left;
}
.art {
    height: 30px;
    background-color: #999;
    border: 1px solid black;
    margin: 0 0 3px 0;
}

<div class="main">
    <div class="left"></div>
    <div class="right">
        <div class="art"></div>
        <div class="art"></div>
        <div class="art"></div>
    </div>
</div>
<div class="footer"></div>

http://jsfiddle.net/BETEPAH/jJwVa/