body {
  margin: 0;
  background-color: #000000;
  color: #ffffff;
}

a {
  text-decoration: none;
  color: #ffffff;
}
a:hover {
  color: cyan;
  text-decoration: underline;
}

h1,
h2,
h3,
h4 {
  font-family: Arial, Helvetica, Verdana, sans-serif;
}
h1 {
  text-align: center;
  font-size: 20pt;
  margin-top: 1em;
  margin-bottom: 0.6em;
}
h2 {
  text-align: center;
  font-size: 18pt;
  margin-top: 1em;
  margin-bottom: 0.4em;
}
h3 {
  font-size: 14pt;
  margin-top: 1em;
  margin-bottom: 0.4em;
}
h4 {
  font-size: 12pt;
  margin-top: 1em;
  margin-bottom: 0.4em;
}

p {
  font-family: Arial, Helvetica, Verdana, sans-serif;
  font-weight: normal;
  font-size: 11pt;
  line-height: 1.2em;
  text-align: left;
}

.bold {
  font-weight: bold;
}

.menu {
  position: relative;
  display: inline-block;
}
#col1,
#col2 {
  float: left;
  width: 45%;
  padding: 0 1%;
  margin: 0;
  min-width: 18em;
  border-left: solid 2px #ddf;
}
.menubtn {
  background-color: #3498db;
  color: white;
  padding: 16px;
  font-size: 16px;
  border: none;
  cursor: pointer;
}
.menubtn:hover,
.menubtn:focus {
  background-color: #2980b9;
}
.menu-content {
  display: none;
  position: absolute;
  background-color: #3b3b3b;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
  z-index: 1;
}
.menu-content a {
  color: white;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
}
.menu a:hover {
  background-color: #ddd;
  color: black;
}
.show {
  display: block;
}

.chapter {
  border-bottom: 1px solid #ccc;
  padding: 10px 0;
}
.chapter-title {
  cursor: pointer;
  transition: color 0.3s ease;
}
.chapter-title:hover {
  color: #007acc;
}
.chapter-posts {
  overflow: hidden;
  transition: max-height 0.5s ease, opacity 0.3s ease;
  opacity: 0;
  max-height: 0;
  padding-left: 15px;
}
.chapter.open .chapter-posts {
  opacity: 1;
  max-height: max-content;
}
.prevent-select {
  user-select: none; /* Standard syntax */
}