.bill{
    border:1px solid #ddd;
    border-radius:8px;
    margin-bottom:10px;
    overflow:hidden;
}

.bill-header{
    background:#f5f5f5;
    padding:12px;
    cursor:pointer;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

.bill-header:hover{
    background:#eee;
}

.bill-body{
    display:none;
    padding:10px;
}

.bill table{
    width:100%;
    border-collapse:collapse;
}

.bill th,
.bill td{
    border:1px solid #ddd;
    padding:8px;
}

.info{
    color:#666;
    font-size:14px;
}