#container {
  max-width: 1000px;
  margin: 0 auto;
}

#nav-main-container {
  display: flex;
  flex-wrap: wrap;
}

nav {
  flex-basis: 175px;
}

@media (max-width: 900px) {
  #nav-main-container {
    flex-direction: column;
  }
  
  nav {
    flex-basis: auto;
  }
  
  nav ul {
    display: flex;
    flex-direction: row;
    justify-content: center;
    padding: 10px 0;
  }
    
  nav .sublist {
    display: none;
  }
}

@media (max-width: 600px) {
  .posts-list-entry .post-header {
    flex-direction: column;
  }
  
  .posts-list-entry .post-date {
      flex-shrink: 0;
      white-space: nowrap;
      color: #666;
      font-size: 0.9em;
      margin: -15px 0 5px 0;
  }
}

main {
  flex: 1;
  padding: 0 25px;
}

header {
  margin: 20px 0;
}

#site-title {
  font-size: 30px;
  margin: 0 10px;
  text-decoration: none;
  color: #333;
}

main img {
  display: block;
  max-width: 100%;
  margin: auto;
}

blockquote {
  border-left: 4px solid #ccc;
  padding-left: 15px;
  margin-left: 35px;
  color: #666;
  font-style: italic;
}

blockquote blockquote {
  margin-left: 0px;
}

.post-title {
  margin: 0;
}

.post-date {
  color: #666;
}

body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.4;
  color: #333;
  background-color: #fafafa;
}

pre {
  background-color: #f0f0f0;
  border: 1px solid #ccc;
  border-radius: 6px;
  padding: 10px;
  margin: 10px 25px;
  overflow: auto;
  font-family: "Fira Mono", Menlo, Consolas, monospace;
}

code {
  border: 1px solid #ccc;
  border-radius: 3px;
  padding: 1px 3px;
  font-family: "Fira Mono", Menlo, Consolas, monospace;
}

pre code {
  border: None;
  padding: 0px;
  background-color: transparent;
}

math[display="block"] {
  font-size: 1.3em;
  margin: 20px;
}

nav ul {
  list-style: none;
  padding: 0px;
  margin: 0px;
}

nav li {
  margin: 3px 0;
  font-size: 1.1rem;
}

nav a {
  display: block;
  padding: 8px 12px;
  text-decoration: none;
  color: #333;
  border-radius: 3px;
  transition: background-color 0.1s;
}

nav a:hover {
  background-color: #e3e3e3;
}

nav .sublist {
  padding-left: 15px;
}

nav .sublist a {
  padding: 6px 10px;
  font-size: 1rem;
}

.posts-list-entry {
    display: block;
    text-decoration: none;
    color: inherit;
    padding: 15px;
    margin: 10px 0;
    border-radius: 6px;
}

.posts-list-entry .post-header {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    margin-bottom: 8px;
}

.posts-list-entry .post-title {
    margin: 0;
    font-size: 1.2em;
    font-weight: normal;
}

 .post-title a {
    text-decoration: none;
    color: inherit;
 }

.posts-list-entry .post-date {
    flex-shrink: 0;
    white-space: nowrap;
    color: #666;
    font-size: 0.9em;
}

.posts-list-entry .post-summary {
    margin: 0;
    color: #666;
}

main a {
  color: #555;
  text-decoration: none;
  border-bottom: 2px solid #ddd;
  transition: border-color 0.2s;
}

main a:hover {
  color: #333;
  border-bottom-color: #337ab7;
}