If you wish to add the same menu to Blogger Template Designer templates then read this post -> Custom Drop Down menu.
Why
do you run after scripts such as jquery while you can use simple CSS
and HTML to create beautiful drop down menus for your blog. I already
shared a list of 30 Navigation menus
and now you need to learn how to create a drop down menu in a
navigation. I am sharing a simple code here that can be fully customize
to make your preferred changes. So lets get to work!
To Create a Drop Down Menu follow these steps
A drop down menu is needed when you have too much content on your
blog or you love keeping things organized. To add a drop down menu to
your blogger blogs do this: