javascript - Cannot select iframe loaded

Question

How can I select my loaded iframe that it can't be selected even it is loaded ?

When I type this in console

var iframe = document.querySelector('iframe[src*="typeform"]');

It returns undefined Even my iframe which is loaded from typeform is shown .

Thanks in advance

This is an image to explain more my question

The buton of typeform is stuck on the other internal button , I want to move the button of the typeform a little bit vertically

Answer 1

I have solved the problem.

iframe[src*="typeform"] {
min-height: 94% !important;
max-height: 94% !important;
}