Error multi tabs

When I navigate from one tabs to another the first one begins to overlap.

1. Select second tabs and then first.
2. The content of the second below appears.

If you go from one tab to another in the first tab, the second tab appears below:
https://fotos.subefotos.com/276ed4524f1fdc398cf9722ec1c854aao.png

There you see how the second tab appears below the first:
https://fotos.subefotos.com/4e81e8917dffbc4d13ecb468374b49fao.png