danbooru/app/assets/stylesheets/specific/z_responsive.scss

@import "../common/000_vars.scss";

#desktop-version-link {
  display: none;
}

@media screen and (max-width: 660px) {
  #desktop-version-link {
    display: inline;
  }

  #saved-searches-nav {
    display: none;
  }

  div#page {
    padding: 0 2px;
    > div /* div#c-$controller */ {
      > div /* div#a-$action */ {
        display: flex;
        flex-direction: column;

        /* Move #sidebar below #content. */
        > aside#sidebar {
          font-size: 1.5em;
          float: none;
          width: auto;
          order: 2;
        }
      }
    }
  }

  #maintoggle {
    display: inline;
    background-color: lighten($link_color, 13%);
    padding: 0.8em 1.2em 0.8em 1.2em;
    border-radius: 20% 20% 0 0;
    font-weight: bold;
    color: #fff;

    &.toggler-active {
      background-color: lighten($link_color, 25%);
      color: #000;    
    }
  }

  /* Make the quick search box in the navbar full width. */
  header#top menu form input {
    width: auto;
  }

  h1 {
    display: none;
  }

  form {
    input[type=text], input[type=submit], select {
      font-size: 1.5em;
    }
  }

  div#page section#content {
    margin: 0;
    padding: 0;
  }

  #comments h2 {
    display: none;
  }

  div.paginator {
    font-size: 16pt;
    font-weight: bold;
    text-align: left;
    padding: 3pt;

    li {
      display: inline;
      line-height: 1.4em;

      a, span {
        padding: 3px 18px;
        margin: 6px 3px;
        display: inline-block;
        border-radius: 15%;
      }
    }
  }

  article.post-preview {
    margin: 0 0 10px 0;
    width: 48vw;
    text-align: center;
    vertical-align: middle;
    display: inline-block;
    a {
      width: 48vw;
      display: block;
      margin: 0 auto;
    }
    img {
      margin: 0 auto;
    }
  }

  img#image {
    margin-top: 5px;
  }

  div#options {
    margin-top: 10px;
    font-size: 24pt;
    font-weight: bold;
  }

  div#tags {
    margin-top: 30px;

    li {
      margin: 10px 0;
    }

    a.search-tag {
      font-size: 24pt;
      font-weight: bold;
    }
  }

  div#page {
    div.comments-for-post div.list-of-comments article.comment div.content {
      clear: both;
      margin: 0;
    }
  }

  #nav {
    display: none;
  }
  
  header#top menu.main {
    background-color: lighten($link_color, 25%);
    padding: 5px 10px;
  }
  
  h1 {
    display: block;
    font-size: 2em;
    margin: 1em 0 0 0;
  }
  
  h2 {
    font-size: 0.825em;
    margin: 1em 0 0 0;
  }
  
  header {
    border-bottom: 2px solid lighten($link_color, 13%);
    text-align: center;
    line-height: 2em;
    h1 {
      display: inline; //Needed for menu button
    }
  }
  
  div#page {
    margin: 0;
  }
}

@media screen and (max-width: 440px) {
  input#expand-search {
    display: none;
  }

  body {
    width: 100%;
  }

  #post-sections {
    font-size: 1em;
  }
  
  div article.post-preview {
    overflow: visible;
  }
}

#tos-notice {
  display: none;
}