tr .tt-details-control {
    vertical-align: middle !important;
}
tr .tt-details-control .expander {
    position: relative;
    color: transparent;
    margin: 0 5px;
    min-width: 10px;
}

tr.has-child .tt-details-control {
    cursor: pointer;
}

tr.has-child .tt-details-control .expander {
    cursor: pointer;
}
tr.has-child .tt-details-control .expander::after {
    content: '';
    position: absolute;
    -webkit-transform: translate(-18%, -50%) rotate(-90deg);
    transform: translate(-18%, -50%) rotate(-90deg);
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 8px solid #000;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
}

tr.open .tt-details-control .expander::after {
    -webkit-transform: translate(0, -50%) rotate(0);
    transform: translate(0, -50%) rotate(0);
}

tr:not(.has-child) .tt-details-control .expander::after {
    content: '-';
    font-weight: bold;
    color: #000;
    border: 0;
}

tr:not(.has-child).level-0 .tt-details-control .expander::after {
    content: ' ';
}

tr.level-1 .tt-details-control .expander::after {
    margin-left: 0;
}

tr.level-2 .tt-details-control .expander::after {
    margin-left: 10px;
}

tr.level-3 .tt-details-control .expander::after {
    margin-left: 20px;
}

tr.level-4 .tt-details-control .expander::after {
    margin-left: 30px;
}

tr.level-5 .tt-details-control .expander::after {
    margin-left: 40px;
}

.tt-dummy-wrapper {
    display: none;
}