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To make the input field active or focused whenever a user clicks on an empty area, you can add an event listener to the body of the HTML page. Here's an example using JavaScript:

document.body.addEventListener('click', function(event) {
  // check if the user clicked on an empty area (i.e. not on an input field)
  if (!event.target.closest('input')) {
    // find the first input field on the page and focus on it
    document.querySelector('input').focus();
  }
});

This code will listen for click events on the body of the page. If the user clicks on an empty area (i.e. not on an input field), it will find the first input field on the page and focus on it. This way, the input field will become active whenever the user clicks on an empty area.