body {
  max-width: 1100px;
  position: relative;
  margin: 0 auto;
  background-color: #222;
  color: #FFF;
  padding: 50px;
  font-family: Roboto, Arial, Helvetica, sans-serif;
  font-size: 18px;
  line-height: 1.5;
  hyphens: auto;
  -webkit-hyphens: auto;
  -moz-hyphens: auto;
}

h1 {
  font-size: 1.5em;
  margin: 0.83em 0;
}

details {
  color: #AAA;
  font-style: italic;
}

summary {
  color: white;
  list-style: none;
  cursor: pointer;
}

summary:hover {
  color: #FEE189;
}

summary::after {
  font-style: normal;
  content: ' \25B6';
}

details[open] summary::after {
  font-style: normal;
  content: ' \25BC';
}

ol {
  margin: 0;
  padding-left: 1.5em;
  list-style-position: outside;
}

a {
  color: #FFF;
  text-decoration: none;
}

a:hover {
  color: #FEE189;
}

img {
  width: 400px;
  height: auto;
  border: 1px solid #8B4513;
  padding: 0;
  margin: 0;
  display: block;
}

img.graph {
  width: 453px;
}

.img-block, .fig-block {
  float: right;
  padding: 0;
  margin: 0 0 0.8em 1.5em;
}

.caption {
  text-align: left;
  font-size: 0.8em;
}

.quote {
  font-style: italic;
}

/* text break */
.break {
  color: #FEE189;
  text-align: center;
}

.clearfix::after {
  content: "";
  display: table;
  clear: both;
  margin-top: -0.2em;
}

.firstfix {
  margin-bottom: 1.7em;
}

.lastfix {
  margin-top: -0.7em;
}

@media (max-width: 768px) {
  body {
    position: relative;
    margin: 0 auto;
    font-size: 14px;
    padding: 12px;
  }
  img {
    max-width: 75%;
    width: 300px;
    height: auto;
    float: none;
  }
  img.graph {
    max-width: 90%;
    width: 453px;
  }
  .img-block {
    float: none;
    margin: 0 0 1.4em 0;
  }
  .fig-block {
    float: none;
    margin: 0 0 1em 0;
  }
}

.nav-wrapper {
  position: fixed;
  top: 0;
  left: 50%;
  width: 1100px;
  transform: translateX(-50%);
  height: 0;
  z-index: 1000;
  pointer-events: none;
}

.nav-menu {
  position: absolute;
  top: 25px;
  right: -25px;
  pointer-events: auto;
}

@media (max-width: 1200px) {
  .nav-wrapper {
    width: 100%;
    transform: none;
    left: 0;
  }
  .nav-menu {
    right: 25px;
  }
}

.burger {
  background: #8B4513;
  width: 40px;
  height: 40px;
  border-radius: 5px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 5px;
}

.burger-line {
  width: 25px;
  height: 3px;
  background: white;
  margin: 2px 0;
}

.menu-content {
  display: none;
  position: absolute;
  top: 50px;
  right: 0;
  background: #333;
  border: 1px solid #8B4513;
  border-radius: 5px;
  padding: 3px 15px;
  min-width: 100px;
  max-width: 300px;
  white-space: nowrap;
}

.menu-content a:last-child {
  border-bottom: none;
}

.menu-content a {
  display: block;
  color: white;
  text-decoration: none;
  padding: 8px 0;
  border-bottom: 1px solid #555;
}

.menu-content a:hover {
  color: #FEE189;
}

@media (pointer: coarse) {
   a:hover {
    color: #FFF;
  }
  summary:hover {
    color: #FFF;
  }
  .menu-content a:hover {
    color: #FFF;
  }
}