nodebb-plugin-embed/public/css/acp.css

Embed media and rich content in posts: youtube, vimeo, twitch etc. All embeds are based on the rules. You are encouraged to build your own rules to embed everything what is embeddable.

/**
 * google-material-color v1.2.6
 * https://github.com/danlevan/google-material-color
 */
.plugin-embed .actions button + button {
  margin-left: 8px; }

.plugin-embed .rules {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-flow: row wrap;
      -ms-flex-flow: row wrap;
          flex-flow: row wrap; }
  .plugin-embed .rules .item {
    cursor: pointer;
    border-radius: 4px;
    border: 1px solid #EEEEEE;
    width: 160px;
    padding: 16px;
    margin: 4px;
    -webkit-flex: 0 1 auto;
        -ms-flex: 0 1 auto;
            flex: 0 1 auto; }
    .plugin-embed .rules .item.selected {
      border: 1px solid #1976D2;
      background-color: #2196F3;
      color: #ffffff; }

.plugin-embed .utils-info {
  font-size: 0.8em;
  line-height: 1.2em;
  color: #455A64; }