How to prevent jQuery .remove() from deleting parent class

I have created an clone element function which can be viewed view demo here. When the reset button is pressed it removes all cloned item elements, however when attempting to add another item the item list, the 'NEW' added item are not visible with the DOM.

 $('#add-btn').on('click',function(){
    $('.list-items:first').clone().appendTo("#items").addClass('isVisible');
    $('#items-fields').val('');
})

// RESET BUTTON 
$('.reset').on('click', function(){
    if( $('.list-items').length != 1);
    $('.list-items:last').remove();
    event.preventDefault();
})

Where you have your reset button change the code in your if statement to the following

$('.reset').on('click', function(){
    if($('.list-items').length > 1) {
        $('.list-items:last').remove();
    }
})

At the moment you have set your list-items the following way..

When a user clicks the delete button, if the number of  things with the class list-item does not equal 0, then remove the last list-item

You need to change it the code so it does the following:

When a user clicks the delete button, if the number of  things with the class list-item is greater than 1, then remove the last list-item