QTabBar::tab 
{
    background: rgba(31, 31, 31, 100%);
    color: #FFF;
    padding: 7px;
    border-right: 1px solid #000000;
    margin-bottom: 3px;
}

QTabBar::tab:selected 
{
    background: rgba(77, 77, 77, 100%);
    color: #fff;
    border-bottom: 3px solid #4791F0;
    margin-bottom: 3px;
}

QTabBar::tab:selected:hover
{
    background: rgba(87, 87, 87, 100%);
}

QTabBar::tab:!selected:hover 
{
   background: rgba(87, 87, 87, 100%)
}

QTabBar 
{
    background: rgba(31, 31, 31, 100%);
    qproperty-drawBase: 0;
}

QTabWidget::pane 
{

}

QPushButton
{
    background-color: white;
}