img[alt="Chemistry"][src$="chemistry.png"] { display: block; margin: 1.5em auto; }
/* Side box-outs from the printed book: float right like print, full width on phones */
aside.boxout { float: right; clear: right; width: 36%; margin: 0.2em 0 1em 1.5em; padding: 0.8em 1em;
  background: var(--quote-bg); border-left: 4px solid var(--quote-border); font-size: 0.88em; line-height: 1.45; }
aside.boxout p { margin: 0 0 0.6em; }
aside.boxout p:last-child { margin-bottom: 0; }
aside.boxout .boxout-title { font-weight: 700; font-size: 1.1em; margin-bottom: 0.4em; }
aside.boxout .boxout-credit { text-align: right; font-style: italic; }
@media (max-width: 720px) { aside.boxout { float: none; width: auto; margin: 1em 0; } }