Developers can control the alignment of tab by use the align property of tabs. By default, it is start (leftmost or uppermost). You can change it to center or end (rightmost or bottommost), and the effect is as follows.

<tabbox width="250px">
    <tabs align="end">    
        <tab label="Tab 1"/>        
        <tab label="Tab 2"/>        
    </tabs>    
    <tabpanels>    
        <tabpanel>This is panel 1</tabpanel>        
        <tabpanel>This is panel 2</tabpanel>        
    </tabpanels>    
</tabbox>