discourse/app/assets/stylesheets/common/components/user-stream-item.scss

// Common styles for "user-stream-item" component
.user-stream {
  // DEPRECATED:
  // The ".item" class should be removed because it's too generic.
  // Once ".item" has been removed, ".user-stream-item" can replace
  // ".user-stream" as the top-level selector on this file as all other
  // selectors below are its children
  .item,
  .user-stream-item {
    background-color: var(--secondary);
    border-bottom: 1px solid var(--primary-low);
    padding: 1em 0.53em;
    list-style: none;

    &.moderator-action {
      background-color: var(--highlight-medium);
    }

    &.deleted {
      background-color: var(--danger-low-mid);
    }

    &.hidden {
      display: block;
      opacity: 0.4;
    }
  }

  .user-stream-item__header {
    display: flex;
    align-items: flex-start;
  }

  .user-stream-item__details {
    flex-grow: 1;
  }

  .type,
  span.name {
    color: var(--primary);
  }

  .time,
  .delete-info,
  .draft-type {
    line-height: var(--line-height-small);
    color: var(--primary-medium);
    font-size: $font-down-2;
    padding-top: 5px;
  }

  .notification .time {
    margin-left: auto;
    float: none;
  }

  .delete-info .d-icon {
    font-size: $font-0;
  }

  .expand-item,
  .collapse-item {
    margin-right: 0.5em;
    margin-left: 0.25em;
    line-height: var(--line-height-small);
    padding-top: 3px;
    color: var(--primary-medium);
  }

  .avatar-link {
    margin-right: 0.5em;
  }

  .name {
    font-size: $font-0;
    max-width: 400px;
    @include ellipsis;
  }

  .edit-reason {
    background-color: var(--highlight-medium);
    padding: 3px 5px 5px 5px;
  }

  .remove-draft {
    float: right;
  }

  .notification {
    li {
      display: inline-block;
    }

    p {
      display: inline-block;

      span:first-child {
        color: var(--primary);
      }
    }

    // common/base/header.scss
    .fa,
    .icon {
      color: var(--primary-med-or-secondary-med);
      font-size: $font-up-4;
    }
  }

  .excerpt {
    margin: 1em 0 0 0;
    font-size: $font-0;
    word-wrap: break-word;
    color: var(--primary);
    &:empty {
      display: none;
    }
    details.disabled {
      color: var(--primary-medium);
    }
  }

  .group-member-info {
    display: flex;
  }
}

.user-stream .child-actions, /* DEPRECATED: '.user-stream .child-actions' selector*/
.user-stream-item-actions,
.user-stream-item-draft-actions {
  margin-top: 8px;

  .avatar-link {
    float: none;
    margin-right: 3px;
  }

  .fa {
    width: 15px;
    display: inline-block;
    color: var(--primary);
    &.d-icon-heart {
      color: var(--love);
    }
    &.d-icon-far-trash-alt {
      color: var(--secondary);
    }
  }
}