How to set hight size in tabseet？

Vaadin 6 / 7 / 8 Framework UI
1 

             How to set tab set the height in tabseet?

          Above the red part?

        Thanks very mach！
2

Changing that particular bit is a bit complicated; my first suggestion is to test if adding

tabsheet.addStyleName(Reindeer.TABSHEET_SMALL); is OK. If not, then you need to change the CSS of the tabsheet in you own theme; I can provide some pointers for that.