pre > code {
    display: block;
    white-space: pre;
    margin-top: -1.00em;
    background-color: #eeeeee;
    font: 1em 'Courier New', Courier, monospace;
    width: 50%;
}

#header {
    height: 40px;
    border-bottom: 1px solid #EEE;
    background-color: #ffffff;
    height: 40px;
    -webkit-border-top-left-radius: 5px;
    -webkit-border-top-right-radius: 5px;
    -moz-border-radius-topleft: 5px;
    -moz-border-radius-topright: 5px;
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
}

#left {
    width: 20%;
    float: left;
    border: 1px solid;
}

#center {
    width: 79%;
    float: right;
}