body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: #333;
  color: #fff;
  padding: 1em;
  text-align: center;
  z-index: 1;
  position: relative;
}

nav#toc {
  max-width: 800px;
  margin: 20px auto;
  padding: 1em;
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 1em;
}

nav#toc ul {
  list-style: none;
  margin-left: 20px !important;
  padding: 0;
  margin: 0;
}

nav#toc li {
  margin-bottom: 0.5em;
}

nav#toc a {
  color: #22527b;
  text-decoration: underline;
}

nav#toc a:hover {
  color: #23527c;
}

nav#toc div {
  font-size: 1.5em;
  font-weight: bold;
  margin-bottom: 10px;
}

h1, h2 {
  margin-bottom: 0.5em;
}

ul {
  list-style-type: disc;
  padding-left: 40px;
  margin: 0;
}

li {
  margin-bottom: 0.5em;
}

a {
  color: #337ab7;
  text-decoration: underline;
}

a:hover {
  color: #23527c;
}

.article img {
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  display: block;
}

figcaption {
  font-size: 0.8em;
  color: #666;
  text-align: center;
  margin-top: 10px;
  padding: 10px;
  background-color: #f9f9f9;
  border: 1px solid #ddd;
}

footer {
  background-color: #333;
  color: #fff;
  padding: 1em;
  text-align: center;
  clear: both;
}

footer a {
  color: #fff;
}

footer a:hover {
  color: #fff;
}

.slider {
  position: relative;
  width: 100%;
  height: 600px;
  overflow: hidden;
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
}

.slide.active {
  display: block;
}

.slider img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slider p {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 10px;
  background-color: rgba(0, 0, 0, 0.8);
  color: #fff;
  font-size: 14px;
  text-align: center;
}

.slider .prev, .slider .next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  cursor: pointer;
}

.slider .prev {
  left: 10px;
}

.slider .next {
  right: 10px;
}

blockquote {
  font-style: italic;
  font-size: 1.2em;
  margin: 20px 0;
  padding: 10px;
  border-left: 4px solid #ccc;
  background-color: #f9f9f9;
}

blockquote::before {
  content: "\201C";
  font-size: 1.5em;
  margin-right: 5px;
}

blockquote::after {
  content: "\201D";
  font-size: 1.5em;
  margin-left: 5px;
}

picture {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  overflow: hidden;
  box-sizing: border-box;
}

picture img {
  width: 100%;
  height: auto;
  display: block;
  box-sizing: border-box;
}