html {
    --textsize: 16px;
    --textcolor: #eeefee;
    --backcolor: #0e0e0f;
  
    --margin: calc(0.8em + 1vw);
    --thumbsize: 156px; /* size M */
    --slide-transition: auto; /* smooth or auto */
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  table {
    width: 100%;
}

td {
    padding: 8px;
    vertical-align: top;
}

img {
    display: block;
    margin: auto;
    max-width: 100%;
    height: auto;
}
  
html,
  body {
    height: 100%;
    scroll-behavior: smooth;
  }
  
  body {
    color: var(--textcolor);
    background: var(--backcolor);
    padding: var(--margin) var(--margin) 0;
    overscroll-behavior: contain;
    -webkit-tap-highlight-color: transparent;
    font: var(--textsize) / 1.4 -apple-system, BlinkMacSystemFont, 'Segoe UI', Noto, Roboto, Oxygen-Sans, Cantarell, 'Helvetica Neue', Arial, sans-serif;
    --textcolor: #eeefee;
  }

  .options-container {
    display: flex;
    justify-content: center; /* Center the container */
    gap: 20px; /* Increase horizontal padding between buttons */
    margin-bottom: 20px;
}

  
  footer {
    position: sticky;
    top: 100vh;
    padding: calc(var(--margin) * 2.5) 0 var(--margin) 0;
    font-size: 0.85em;
    opacity: 0.3;
  }
  
  h1 {
    font-size: 2em;
    text-align: center;
  }
  
  h1 span {
    font-weight: normal;
    text-align: center;
    display: inline-block;
  }
  
  a {
    color: currentColor;
  }

nav {
    background: #0e0e0f;
    padding: 1em;
}

nav ul {
    list-style-type: none;
    display: flex;
    justify-content: space-around;
    padding: 0;
}

nav a {
    text-decoration: none;
    color: #eee;
    font-weight: bold;
    padding: 0.5em;
    border-radius: 5px;
    transition: background 0.3s ease;
}

nav a:hover {
    background: rgba(255, 255, 255, 0.1);
}

.split-page {
    display: flex;
    height: 100%;
    overflow: hidden;
}

.sidebar {
    flex: 0 0 40%;
    overflow-y: auto;
    background: #0e0e0f;
    padding: calc(0.8em + 1vw);
}

.separator {
    border-left: 2px solid #ccc;
    height: 100%;
}

.content {
    flex: 1;
    overflow-y: auto;
    background: #0e0e0f;
    padding: calc(0.8em + 1vw);
    scroll-behavior: smooth;
}

#button-container {
  font: var(--textsize) / 1.4 -apple-system, BlinkMacSystemFont, 'Segoe UI', Noto, Roboto, Oxygen-Sans, Cantarell, 'Helvetica Neue', Arial, sans-serif;
  display: flex;
  justify-content: center; /* Center the container */
  gap: 20px; /* Increase horizontal padding between buttons */
  margin-bottom: 20px;
}

button {
  font: var(--textsize) / 1.4 -apple-system, BlinkMacSystemFont, 'Segoe UI', Noto, Roboto, Oxygen-Sans, Cantarell, 'Helvetica Neue', Arial, sans-serif;
  padding: 10px 30px; /* Adjust padding for buttons */
  cursor: pointer;
  border: none;
}

.selected-option {
  background-color: #3498db;
  color: #fff;
}

pre {
  white-space: pre-wrap;
}