body, textarea {
    background: #fff;
    margin: 0;
    padding: 20px;
    font-family: Arial;
    font-size: 12px;
}

#header {
    background:#aaf;
    padding:20px;
}

#editor {
    position:relative;
    border:1px #999 dashed;
    overflow:scroll;
    width:960px;
    height:500px;
}

.block {
    border-top: 1px solid #aaa;
    border-bottom: 1px solid #aaa;
    position: absolute;
    background:#eee;
    padding:0px;
    border-collapse:collapse;
}

.handle, .resize {
    display:block;
    width:20px;
    height:20px;
    background:#ff2;
    cursor:move;
}

.handle {
    border-bottom:1px #999 solid;
    border-right:1px #999 solid;
}

.resize {
    position:absolute;
    right:0;
    bottom:0;
    border-top:1px #999 solid;
    border-left:1px #999 solid;
}