Question: I want to make a very basic GUI: tabs, text area.

But I want to color my tabs and make them always looking the same on MAC, Windows and Linux.

So, I tryed to use a stylesheet:

```
QTabWidget::pane
{
    border-top: 2px solid #1B1B1B;
    background-color: #262626;
}

QTabWidget::tab-bar
{
    left: 5px;
    alignment: left;
    background: #3E3E3E;
}

QTabBar::tab
{
    background: transparent;
    color: #757575;
    padding: 15px 5px 15px 5px;
}

QTabBar::tab:hover
{
    text-decoration: underline;
}

QTabBar::tab:selected
{
    color: #DEF600;
    background: qlineargradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #262626, stop: 1.0 #3D3D3D );
}

```

But even if the tabs looks well, there is a problem: The tab pane is still transparent...

I can force a background color by adding:

```
QWidget
{
    background-color: #262626;
}

```

But as you know, this change the background color of ALL the widgets, even my QPlainTextEdit that I still want to have a white background. And more annoying, this reset the OS skin and display ugly scrollbars (I really want to keep them as they were).

Is there a way to change the tabs pane background without having to reskin all the components ?

Answer: 
I had the same problem. I could get it to work with this:

```
QTabWidget::pane > QWidget {
    background-color: #262626;
}

```
Try enabling document mode with

`myTab->setDocumentMode(true);`

This has worked for me when everything else has failed. You can do it in code, or by twiddling the property in qtcreator.

You still might have to apply some styles to the pane like so:

```
QTabWidget:pane{
background: red;
}

```

Read more about this in the [documentation](http://qt-project.org/doc/qt-5.0/qtwidgets/qtabwidget.html#documentMode-prop).