Html input show placeholder instead of value

1. Is value and placeholder same?
2. How to display placeholder in CSS?
3. How do you include a value in a form without making it visible?
4. What can I use instead of a placeholder?

Is value and placeholder same?

The placeholder text, although it appears in the same place as the value, is not a value. It is never submitted, and only shows up if there is no value.

How to display placeholder in CSS?

Use the ::placeholder pseudo-element to style your placeholder text in an <input> or <textarea> form element. Most modern browsers support this, but for older browsers, vendor prefixes will be required.

How do you include a value in a form without making it visible?

The <input type="hidden"> defines a hidden input field. A hidden field lets web developers include data that cannot be seen or modified by users when a form is submitted.

What can I use instead of a placeholder?

The p element placed between the label and input elements acts as a replacement for a placeholder attribute.