#left {
    border-color: red;
}
#left .handle {
    background-color: red;
}
#right {
    border-color: #000;
    border-width: 5px;
    width: 20em;
    z-index: 999;
}
#right .handle {
    border-color: #000;
}
#bottom {
    border-color: blue;
}
#bottom .handle {
    background-color: blue;
}
pre {
    margin-left: 3em;
}
.bg_green {
    background: #313232;
    padding:5px;
}
/*.bg_green > form{margin-top:15px;}*/