discourse/plugins/emoji/assets/stylesheets/emoji.css

body img.emoji {
  width: 20px;
  height: 20px;
  vertical-align: middle;
}

#wmd-emoji-button:before {
  content:  "\f118";
}

.emoji-modal {
  z-index: 10000;
  position: fixed;
  margin-left: -195px;
  margin-top: -100px;
  left: 50%;
  top: 50%;
  background-color: white;
}

.emoji-page td {
  border: 1px solid #eee;
}

.emoji-page a {
  padding: 8px;
  display: block;
}

.emoji-page a:hover {
  background-color: rgb(210, 236, 252);
}

.emoji-page {
  border-collapse: collapse;
  margin: 3px;
}

.emoji-modal-wrapper {
  z-index: 9999;
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  opacity: 0.8;
  background-color: black;
}