Supporting text when focus is on input element

I have a form, and as the user goes through the form I would like for text to appear when focus goes to an input element.

These are text inputs, usually, but the same mechanism should work for drop-downs or date pickers, which are also in my form.

So when the users’s cursor arrives at a “type of business” input for example (either by “tabbing through” or clicking on it) I want a helpful panel of text to appear nearby on the page that says “Please tell us about your type of business!” (for example).

I don’t have any strong feelings as to what type of UI element does this job. Looking into tool tips and floating groups has yielded only confusion so far.

I think the easiest would be to make room for a basic text element. And then you hide it and create a condition to make it visible when the input field has focus: