viewport,
treeview,
treeview > header,
notebook > stack,
notebook > header {
    background-color: rgba(0, 0, 0, 0.24);
}


notebook > header {
    background-color: rgba(0, 0, 0, 0.24);
    border-color: rgba(0, 232, 255, 0.64);
}

box,
iconview {
    background-color: rgba(0, 0, 0, 0.2);
    background: rgba(0, 0, 0, 0.2);
}

treeview,
treeview.view {
    background: rgba(0, 0, 0, 0.2);
    background-color: rgba(0, 0, 0, 0.2);
}

cell {
    margin: 0em;
    padding: 0em;
    /* float: left; */
}

cell:focus {
    outline-style: solid;
    outline-color: rgba(0, 232, 255, 0.64);
}