.tree-node {
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    transition: transform 0.2s;
}

.level1 {
    margin-left: 30px;
}

.level2 {
    margin-left: 60px;
}

.level3 {
    margin-left: 90px;
}

.form-fieldset-body {
    overflow: visible !important;
}