Set ultrawebtab to borderless!

When using ultrawebtab, we usually have a border by default. For example, it looks very uncomfortable:
The border of the four sides to make the interface concave. to better integrate with the tab header, we recommend that you remove the border.

Effect:
 
It can be seen that without the border, the effect is much better. Can be fully integrated.

This property is also found for N long, in case you forget:
 

Note that this is set in each tab item, rather than the entire tab control.
In addition, you need to set the borderstyle attribute in contentpane to none. If it is the style of the control, it will not work.

Try it !!