GtkColumnView CSS example

columnview.ui

   
```css
.repository header button {
  min-height: 18px;
  min-width: 8px;
  font-size: 0.9em;
  border-radius: 0;
  border-style: solid;
  border-bottom-width: 1px;
  border-color: @borders;
}
```

```xml
<object class="GtkColumnView" id="repository">
  <property name="show-column-separators">false</property>
  <property name="show-row-separators">false</property>
  <property name="enable-rubberband">false</property>
  <property name="reorderable">false</property>
  <property name="model">selection</property>
  <style>
    <class name="rich-list" />
    <class name="repository" />
  </style>
</object>
```