This is a completely off-topic post, but I couldn't resist posting it.
If you hover on products in the menu navigation at the top of this site, you see this:
So what you are seeing is:
1 A countdown timer placed right into the menu navigation
2 The countdown timer is active. That is, it isn't a static image. You can actually see the timer counting down.
3 The link is active. That is, if you are curious, you can click on the timer itself and go to the page which actually talks about the offer in more detail.
WordPress plugin ecosystem
Now, you may never want to do anything quite this funky.
Here is the main thing: I didn't have to write a single line of code to implement this.
Everything you see in that is made possible because of the plugin ecosystem that WordPress supports.
Yes, WordPress has a lot of downsides too. But there is not a single platform which allows you to express your creativity like WordPress does.