Post-it note

Coloured paper note, typically used for short asides.

Post-it notes have a fixed aspect ratio (1:1) and a width that steps up at the two breakpoints — 275px (mobile), 300px (tablet), 425px (desktop).

<div class="post-it yellow">A short note on yellow paper.</div>
<div class="post-it green">…</div>
<div class="post-it cyan">…</div>
<div class="post-it magenta">…</div>