Скачать или смотреть Add Placeholder Text to a Text Field

The placeholder attribute specifies a short hint that describes the expected value of an input field (e.g. a sample value or a short description of the expected format).

The short hint is displayed in the input field before the user enters a value. Note: The placeholder attribute works with the following input types: text, search, url, tel, email, and password.

Keep in mind that self-closing tags in HTML is a kind of HTML tag that does not need to be closed manually by its closing tag, which means it does not have a separate closing tag like the six "headings" tags, the "p" tags, "a" tags, the "main tags" "ol" tags, the "li" tags, and then some.