#header {
    margin-bottom: 15px;
    
}

.details {
    display: none;
}

td.details-control {
    text-align: center;
    cursor: pointer;
    vertical-align: middle;
}

td.details-control::before {
    content: "▸";  /* Pfeil nach rechts */
    font-size: 16px;
    transition: transform 0.2s ease;
    display: inline-block;
}

tr.shown td.details-control::before {
    content: "▾";  /* Pfeil nach unten */
    transform: rotate(0deg);
}