discourse/app/assets/stylesheets/desktop/topic-post.scss

.full-width {
  margin-left: 0;
}

.staff {
  .topic-post:first-child {
    nav.post-controls .post-admin-menu {
      bottom: -125px;
    }
  }
}

.topic-body {
  padding: 0;
  &:first-of-type {
    border-top: none;
  }
  .reply-to-tab {
    z-index: z("base") + 1;
    color: var(--primary-med-or-secondary-med);
  }
  .actions .fade-out {
    .discourse-no-touch & {
      opacity: 0.7;
      transition: background 0.25s, opacity 0.7s ease-in-out;
    }
    .discourse-touch & {
      opacity: 1;
    }
  }
  &:hover .actions .fade-out,
  .selected .actions .fade-out {
    opacity: 1;
  }
}

section.post-menu-area {
  position: relative;
  padding-left: var(--topic-body-width-padding);
}

.post-links-container {
  margin-left: var(--topic-body-width-padding);
}

nav.post-controls {
  // for consistency, try to control spacing by editing these variables
  --control-margin: 0.33em;
  --control-icon-space: 0.33em;
  .actions {
    button {
      margin-left: var(--control-margin);
      &.create {
        margin-left: calc(var(--control-margin) * 1.52);
        .d-icon {
          margin-right: var(--control-icon-space);
        }
      }
    }
    // Some buttons can be doubled up, like likes or flags
    .double-button {
      margin-left: var(--control-margin);
      &:hover {
        button {
          background: var(--primary-low);
          color: var(--primary-medium);
        }
      }
      button {
        margin-left: 0;
        margin-right: 0;
        &.like {
          // Like button with 0 likes
          &.d-hover {
            background: var(--love-low);
            .d-icon {
              color: var(--love);
            }
          }
        }
        &.has-like {
          // Like button after I've liked
          &.d-hover {
            background: var(--primary-low);
            .d-icon {
              color: var(--primary-medium);
            }
          }
        }
        &.button-count {
          // Like count button
          &.d-hover {
            color: var(--primary);
          }
          + .toggle-like {
            // Like button when like count is present
            &.d-hover {
              background: var(--primary-low);
            }
          }
        }
      }
    }
  }
  .show-replies {
    margin-left: calc(
      var(--topic-body-width-padding) * -1
    ); // negates padding-left on .cooked, for visual alignment
    .d-icon {
      margin-right: var(--control-icon-space);
    }
  }
}

pre.codeblock-buttons {
  .copy-cmd:not(.action-complete),
  .fullscreen-cmd:not(.action-complete) {
    opacity: 0;
    transition: 0.2s;
    visibility: hidden;
  }
}

pre.codeblock-buttons:hover {
  .copy-cmd,
  .fullscreen-cmd {
    opacity: 0.7;
    visibility: visible;
    &:hover {
      opacity: 1;
    }
  }
}

.embedded-posts {
  h1,
  h2,
  h3 {
    margin: 10px 0;
  }
  border: 1px solid var(--primary-low);
  .topic-body {
    box-sizing: border-box;
    width: calc(100% - 70px); // [100% - .topic-avatar width]
    // WARNING: overflow hide is required for quoted / embedded images
    // which expect "normal" post width, but expansions are narrower
    overflow: hidden;
  } // this is covered by .topic-body .regular on a normal post
  // but no such class structure exists for an embedded, expanded post
  .cooked {
    margin-top: 15px;
  }
  .topic-avatar {
    padding-left: 25px;
    padding-top: 15px;
  }
  .collapse-down,
  .collapse-up {
    position: absolute;
    color: var(--primary-medium);
    background: var(--secondary);
    border: 1px solid var(--primary-low);
    padding: 6px 9px 8px;
    z-index: 99; // Needs to be higher than topic-avatar
    .d-icon {
      color: currentColor;
    }
    .discourse-no-touch & {
      &:hover {
        background: var(--primary-low);
        color: var(--primary-high);
        .d-icon {
          color: currentColor;
        }
      }
    }
  } // bottom means "reply expansion" below a post
  &.bottom {
    border-top: none;
    margin-bottom: 20px;
    &.hidden {
      display: block;
      opacity: 0;
    }
  }
  &.bottom {
    .collapse-up {
      transform: translate(-50%, -164%);
    }
    .row {
      padding-bottom: 0.5em;
      .topic-avatar,
      .topic-body {
        border-top: 1px solid var(--primary-low);
      }
    }
  } // top means "in reply to expansion" above a post
  &.top {
    border-bottom: none;
    .collapse-down {
      transform: translate(-50%, 55%);
    }
    margin-left: var(--topic-avatar-width);
    width: calc(
      var(--topic-body-width) + (var(--topic-body-width-padding) * 2) +
        var(--topic-avatar-width) - (var(--topic-avatar-width) + 2px)
    ); // 2px accounts for left and right borders
    .row {
      border-bottom: none;
      .topic-avatar,
      .topic-body {
        border-top: 1px solid var(--primary-low);
      }
    }
  }
  &.top.topic-body {
    padding: 0;
  }
  .post-date {
    color: var(--primary-med-or-secondary-high);
  }
  .d-icon-arrow-up,
  .d-icon-arrow-down {
    margin-left: 5px;
  }
  .reply:first-of-type .row {
    border-top: none;
  }
  .topic-meta-data {
    position: relative;
  }
  .topic-meta-data h5 {
    position: absolute;
    z-index: z("base");
    font-size: var(--font-down-1);
    a {
      font-weight: bold;
      color: var(--primary-low-mid-or-secondary-high);
    }
  }
  .arrow {
    color: var(--primary-med-or-secondary-high);
  }
}

.post-action {
  .relative-date {
    margin-left: 5px;
  }
  .avatar {
    margin-right: 2px;
  }
}

.topic-map {
  margin: 20px 0 20px var(--topic-body-width-padding);
  .map {
    .secondary {
      text-align: center;
    }
    li {
      float: left;
      padding: 7px 10px;
      &:last-of-type {
        border-right: 0;
      }
      &:nth-child(3) {
        text-align: center;
      }
    }
    .number {
      color: var(--primary-high);
    }
    .number,
    .d-icon {
      font-size: var(--font-up-2);
      line-height: var(--line-height-medium);
    }
    button .d-icon,
    button:hover .d-icon {
      color: var(--primary-high);
    }
    .avatar a {
      float: left;
    }
    .topic-map-post {
      margin-top: 6px;
    }
  }
  .avatars,
  .links,
  .information {
    padding: 7px 10px 7px 10px;
    color: var(--primary);
  }
  .buttons {
    float: right;
    .btn {
      border: 0;
      padding: 0 23px;
      color: var(--primary-med-or-secondary-high);
      background: var(--blend-primary-secondary-5);
      border-left: 1px solid var(--primary-low);
      border-top: 1px solid transparent;
      &:hover {
        color: var(--primary);
        background: var(--primary-low);
      }
      &.collapsed {
        padding-bottom: 1px;
      }
      .fa {
        margin: 0;
        font-size: var(--font-up-2);
        line-height: 52px;
      }
    }
  }
  .link-summary .btn {
    color: var(--primary-med-or-secondary-high);
    background: var(--blend-primary-secondary-5);
    width: 100%;
    &:hover {
      color: var(--primary);
      background: var(--primary-low);
    }
  }

  .toggle-summary .summarization-buttons .top-replies {
    margin-left: 10px;
  }

  .toggle-summary .summary-box {
    margin-top: 10px;
  }
}

#topic-footer-buttons {
  max-width: calc(
    var(--topic-body-width) + (var(--topic-body-width-padding) * 2) +
      var(--topic-avatar-width)
  );

  @media screen and (max-width: 924px) {
    .topic-footer-main-buttons {
      margin-top: 1em; // some extra space for the docked progress bar
    }
  }

  .bookmark {
    .d-icon-bookmark.bookmarked {
      color: var(--tertiary);
    }
  }

  .bookmark.bookmarked .d-icon-bookmark,
  .bookmark.bookmarked .d-icon-discourse-bookmark-clock {
    color: var(--tertiary);
  }
  .feature-on-profile.featured-on-profile .d-icon-id-card {
    color: var(--tertiary);
  }
}

span.post-count {
  background: var(--primary);
  color: var(--secondary);
  opacity: 0.8;
}

button.expand-post {
  margin-top: 10px;
  margin-left: var(--topic-body-width-padding);
}

video {
  max-height: 500px;
}

.video {
  // Height determined by aspect-ratio
  max-height: 500px;
  > video {
    max-height: unset;
  }
}

@keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.btn-group {
  position: relative;
}

.dropdown-toggle {
  float: left;
  position: relative;
}

.post-select {
  float: right;
  margin-right: 20px;
  margin-top: -20px;
}

.deleted-user-avatar {
  font-size: var(--font-up-6);
}

.info-line {
  margin: 10px 0;
  color: var(--primary);
}

/* solo quotes */

blockquote {
  /* leave browser defaults for top and bottom here */
  margin-left: 0;
  margin-right: 0;
  padding: 12px;
}

/* quotes with attribution */

.quote {
  & > blockquote {
    .onebox-result {
      background-color: var(--primary-very-low);
    }
  }
  aside {
    .quote,
    .title,
    blockquote,
    .onebox,
    .onebox-result {
      background: var(--primary-very-low);
      border-left: 5px solid var(--primary-low);
    }
    aside.quote > blockquote,
    aside.quote > .title {
      border-left: 0;
    }
  }
}

.topic-post-visited {
  + .topic-post {
    .topic-avatar,
    .topic-body {
      border-top: none;
    }
  }
}

// variables are used to calculate the width of .gap
.topic-body {
  width: calc(var(--topic-body-width) + (var(--topic-body-width-padding) * 2));
  float: left;
  min-width: 0; // prevents some elements, like <pre>, from blowing out the width
  position: relative;
  border-top: 1px solid var(--primary-low);
  padding: 12px 0 0 0;
  .topic-meta-data {
    padding: 0 var(--topic-body-width-padding) 0.25em
      var(--topic-body-width-padding);
  }
  .cooked {
    padding: 1em var(--topic-body-width-padding) 0.25em
      var(--topic-body-width-padding);
  }
  .group-request {
    padding: 0.5em var(--topic-body-width-padding) 0
      var(--topic-body-width-padding);
  }
  a.expand-hidden {
    padding-left: var(--topic-body-width-padding);
  }
}

.topic-avatar {
  border-top: 1px solid var(--primary-low);
  padding-top: 15px;
  width: $topic-avatar-width;
  float: left;
  z-index: z("base") + 1;
  height: 100%;
}

.gap {
  box-sizing: border-box;
}

.topic-area > .loading-container {
  // loader needs to be same width as posts
  width: calc(
    var(--topic-body-width) + var(--topic-avatar-width) +
      (var(--topic-body-width-padding) * 2)
  );
  max-width: 100%;
}

/* hide the reply border above the time gap notices */

.time-gap + .topic-post .topic-body,
.time-gap + .topic-post .topic-avatar {
  border-top: none;
}

.time-gap + .topic-post .embedded-posts.top {
  border-bottom: 1px solid var(--primary-low);
}

.posts-wrapper {
  position: relative;
  -webkit-font-smoothing: subpixel-antialiased;
}

.dropdown,
.multiselect {
  position: relative;
}

.caret {
  display: inline-block;
  width: 0;
  height: 0;
  vertical-align: middle;
  border-top: 4px solid var(--primary);
  border-right: 4px solid transparent;
  border-left: 4px solid transparent;
  content: "";
  margin-left: 5px;
}

.selected-posts {
  width: 200px;
  position: fixed;
  z-index: z("dropdown") + 1; // 1 higher than .select-posts
  box-shadow: var(--shadow-card);
  padding: 0.714em;
  margin-bottom: 5px;
  right: 10px;
  @include breakpoint(extra-large, min-width) {
    right: auto;
    margin-left: 330px;
    left: 50%;
  }
  button {
    width: 100%;
    margin: 4px auto;
    display: inline-block;
    text-align: left;
  }
  &.hidden {
    display: none;
  }
  .controls {
    margin-top: 10px;
  }
  p {
    font-size: var(--font-down-1);
    margin: 0 0 10px 0;
  }
  p.cancel {
    margin: 10px 0 0 0;
  }
  h3 {
    font-size: var(--font-up-4);
    color: var(--primary);
    margin-bottom: 5px;
    .d-icon {
      margin-right: 7px;
    }
  }
}

a.attachment:before {
  display: inline-block;
  margin-right: 4px;
  // ideally, the SVG used here should be in HTML and reference the SVG sprite
  content: svg-uri(
    '<svg xmlns="http://www.w3.org/2000/svg" width="14px" height="16px" viewBox="0 0 512 512" fill="#{$tertiary}"><path d="M216 0h80c13.3 0 24 10.7 24 24v168h87.7c17.8 0 26.7 21.5 14.1 34.1L269.7 378.3c-7.5 7.5-19.8 7.5-27.3 0L90.1 226.1c-12.6-12.6-3.7-34.1 14.1-34.1H192V24c0-13.3 10.7-24 24-24zm296 376v112c0 13.3-10.7 24-24 24H24c-13.3 0-24-10.7-24-24V376c0-13.3 10.7-24 24-24h146.7l49 49c20.1 20.1 52.5 20.1 72.6 0l49-49H488c13.3 0 24 10.7 24 24zm-124 88c0-11-9-20-20-20s-20 9-20 20 9 20 20 20 20-9 20-20zm64 0c0-11-9-20-20-20s-20 9-20 20 9 20 20 20 20-9 20-20z"></path></svg>'
  );
  vertical-align: middle;
}

.topic-meta-data {
  align-items: center;

  .names {
    display: flex;
    align-items: center;
  }

  &:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
  }

  .post-info {
    a {
      color: var(--primary-med-or-secondary-med);
    }

    a.wiki {
      color: var(--wiki);
    }
  }
}

.who-liked,
.who-read {
  margin-top: 20px;
  margin-bottom: 0;
  width: 100%;
  text-align: right;
}

span.highlighted {
  background-color: var(--tertiary-low);
}

.first.new-user:not(.staff) a {
  color: var(--primary-low-mid);
}

.topic-post.sticky-avatar {
  .topic-avatar {
    position: sticky;
    top: calc(var(--header-offset) - 0.25em);
    margin-bottom: 25px;
  }
}

/* Tablet (portrait) ----------- */

@media all and (max-width: 790px) {
  .topic-avatar {
    width: 45px;
  }
  .topic-post .reply-to-tab {
    right: 15%;
  }
  .topic-body {
    box-sizing: border-box;
    width: calc(100% - 47px); //100% - [width of .topic-avatar + 2px]
  }
  .embedded-posts {
    // top means "in reply to expansion" above a post
    &.top {
      width: calc(100% - 56px); // [100% - margin-left]
    }
  }
}