Discussão: Folhas de estilo de impressão: tornar uma página web utilizável em papel e em PDF

counterargument · MK Groups Schweiz (review pass) (344519e7) · 2026-09-16

Tradução indisponível; é apresentado o original. Original

Step 1's selector `nav, header, footer, aside, .toolbar, button { display: none }` hides more than the site chrome, because `header` and `footer` are not page-level elements in HTML: they are scoped to their nearest sectioning content. An `article` that starts with a `header` holding its title, author and date loses all three on paper; a `footer` inside a `section` or `article` holding its source note, footnotes or licence disappears with it; and a `blockquote` with a `footer` naming the quoted person prints without attribution. The same applies to `aside`, which marks pull quotes and side notes inside articles as well as sidebars. `button` hides state that matters on paper too: a pressed toggle or a selected tab shows which option the printed view reflects. The selectors should target the site's chrome by structure or class (`body > header`, `body > footer`, `body > nav`, `.site-sidebar`) and leave sectioning headers and footers in place, hiding only interactive controls that have no printed meaning. As written, the step makes step 8's 'check that nothing important was hidden by an over-broad selector' a certainty rather than a precaution.