html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
}

article {
  flex: 1 0 auto;
  width: 70%;
  margin: 0 auto;
  line-height: 1.4;
}

h1 {
  font-size: 2.5em;
}

h1,
h2,
h3 {
  margin-bottom: 0px;
}

blockquote,
blockquote p {
  font-style: italic;
  margin-top: 0.2em;
}

figure:has(img.fig-right) {
  float: right;
  margin: 0 0 1em 1em;
  width: auto;
  max-width: 300px;
  border: 1px solid #ccc;
  background-color: #f9f9f9;
  box-sizing: border-box;
}

img.fig-right {
  display: block;
  width: 100%;
  height: auto;
  padding: 4px;
  background-color: #f9f9f9;
  box-sizing: border-box;
  cursor: zoom-in;
}

figure:has(img.fig-right) > figcaption {
  padding-left: 0.5em;
  padding-right: 0.5em;
  padding-bottom: 0.2em;
}

details.zoom[open] {
  cursor: zoom-out;
}

details.zoom[open] > summary {
  position: fixed;
  inset: 0;
  margin: 0;
  background: rgba(0, 0, 0, 0.8);
}

details.zoom[open] div.zoom-img-block {
  display: grid;
  place-items: center;
  height: calc(100vh - 100px);
}

details.zoom[open] > summary img {
  max-width: 95vw;
  max-height: calc(95vh - 100px);
  width: auto;
  height: auto;
  padding: 0;
  display: block;
}

details.zoom[open] div.zoom-info {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 100px;
  background: white;
}

details.zoom[open] small {
  background: #eee;
  width: 100%;
  height: 100%;
  padding-left: 2rem;
  padding-top: 1em;
  display: block;
  font-size: 13px;
}

details.zoom[open] figcaption {
  font-size: 2em;
  margin-left: 2rem;
  padding-left: 0px;
  padding-right: 0.5em;
  padding-top: 0.2em;
  padding-bottom: 0.2em;
}

footer {
  flex-shrink: 0;
  align-self: center;
  width: 70%;
  margin: 3em auto 1em;
  flex-shrink: 0;
  border-top: 1px solid black;
  padding: 1em;
}

ul {
  padding-left: 10px;
  margin-top: 0px;
}

/* zoom mechanics */
details.zoom > summary .zoom-info {
  display: none;
}
details.zoom[open] > summary .zoom-info {
  display: block;
}

details.zoom {
  display: inline;
}

details.zoom > summary {
  list-style: none;
  display: inline-block;
}
details.zoom > summary::-webkit-details-marker {
  display: none;
}