13. What are inline elements, block-level elements, and empty elements?

What are the inline elements? What are block-level elements? What are the empty (void) elements?

Elements in the line

a、b、span、img、input、strong、select、label、em、button、textarea

block level element

div、ul、li、dl、dt、dd、p、h1-h6、blockquote

empty element

That is, HTML elements without content, such as: br, meta, hr, link, input, img

References:

MDN: Inline Elements

MDN: Block Level Elements