Javascript button that adds input fields and a button that will remove the same fields.

JavaScript button that adds input fields and a button that will remove the same fields. It is for adding and removing delivery packages. Width, Length, Height, Weight input fields for each package. A user can fill in the Width, Length, Height, Weight of a package and then click an "add package" button which will add input fields for an additional package and a button to remove the added package. Send button that sends the input values of each package to a PHP file.