.tab_parent {
    padding: 0.5em;
    display: inline;

    border-top: 2px solid white;
    border-left: 2px solid white;
    border-right: 2px solid white;
}

.open_tab_parent {
    box-shadow: 0px 5px white;
}

.open_tab {
    font-style: italic;
}