.collab_box {
    background: #f5f5f5;
    border: 1px solid #ddd;
    padding: 10px;
    margin-bottom: 15px;
}
.collab_box h3 {
    margin-top: 0;
    border-bottom: 1px solid #ddd;
    padding-bottom: 5px;
}
.collab_list {
    margin: 5px 0 0 0;
    padding-left: 20px;
}
.postbit_collab_role {
    display: inline-block;
    background: #4a8bc9;
    color: white;
    padding: 2px 5px;
    border-radius: 3px;
    font-size: 0.9em;
    margin-left: 5px;
}