Input interface should be more user friendly

[jaapaurelio]

It took me a while to understand that the interrogation mark it's actually the submit button. It really looks like an help button. Also, it's missing the cursor pointer.
First time I tried I input parent first, child second, seems more natural to a coder. I was confused with the result.
The arrow to change the parent/child relation is very confusing, giving no indication what is parent what is child.

I would suggest having a code like approach. Where child is inside (bellow/after) parent.

Also, clicking the arrows would in fact change the inputs values.
No need to keep arrows active, since we can swap as many times as we want.

I'm not a designer, but something like this.

[CyberLight]

Hi, @jaapaurelio !

Thank you for your feedback.

• I agree about the button! Right to make it clearer, I really need to replace the question mark with text.

• Regarding the strange behavior of the swap button of tag names:
  The thing is, I am not using client-side JS at all. For this reason, everything is done using CSS and HTML (switching tabs in the mobile view, activating the swap button also without JS).
  In the future, I think to use client-side JS in order to make UI more comfortable to use.