div.test_content {
    width: 510px;
}
div.tree {
    position: relative;
    text-align: center;
    margin-top: 0px;
}
div.branch {
    position: absolute;
    background-color: #65a028;
    padding: 3px;
    border: 1px solid #999;
    width: auto;
    height: auto;
}
div.branch a {
    color: #462502;
}
div.branch a:hover {
    background-color: #e5b748;
}