session-desktop/stylesheets/_emoji.scss

span.emoji {
	display: -moz-inline-box;
	-moz-box-orient: vertical;
	display: inline-block;
	vertical-align: baseline;
	*vertical-align: auto;
	*zoom: 1;
	*display: inline;
	width: 1em;
	height: 1em;
	background-size: 1em;
	background-repeat: no-repeat;
	text-indent: -9999px;
	background-position: 50%, 50%;
	background-size: contain;
}

span.emoji-sizer {
	line-height: 0.81em;
	font-size: 1em;
 	margin: -2px 0;
}

span.emoji-outer {
	display: -moz-inline-box;
	display: inline-block;
	*display: inline;
	height: 1em;
	width: 1em;
}

span.emoji-inner {
	display: -moz-inline-box;
	display: inline-block;
	text-indent: -9999px;
	width: 100%;
	height: 100%;
	vertical-align: baseline;
	*vertical-align: auto;
	*zoom: 1;
}

img.emoji {
	width: 1em;
	height: 1em;
}

img.emoji.small {
	width: 1.25em;
	height: 1.25em;
}
img.emoji.medium {
	width: 1.5em;
	height: 1.5em;
}
img.emoji.large {
	width: 1.75em;
	height: 1.75em;
}
img.emoji.jumbo {
	width: 2em;
	height: 2em;
}

// we need these, or we'll make conversation items too big in the left-nav
.conversations img.emoji.small {
	width: 1em;
	height: 1em;
}
.conversations img.emoji.medium {
	width: 1em;
	height: 1em;
}
.conversations img.emoji.large {
	width: 1em;
	height: 1em;
}
.conversations img.emoji.jumbo {
	width: 1em;
	height: 1em;
}

button.emoji {
  width: 36px;
  height: 36px;
  padding: 0;
  opacity: 0.5;
  border: none;
  background: transparent;

  &:before {
    content: '';
    display: inline-block;
    width: $button-height;
    height: $button-height;
    @include color-svg('../images/smile.svg', $grey);
  }

  &:focus, &:hover {
    opacity: 1.0;
  }
}

// Import emoji panel css and override paths
@import '../node_modules/emoji-panel/lib/emoji-panel-apple-32.css';
@font-face {
  font-family: 'apple-category';
  src: url(../node_modules/emoji-panel/lib/asset/apple.ttf) format("truetype");
  font-weight: normal;
  font-style: normal; }

.emoji-panel-container {
  height: 0px;
  .ep-e {
    background-image: url('../node_modules/emoji-datasource-apple/img/apple/sheets/64.png');
    background-size: 1734px;
  }
  .ep-slide {
    background-color: $blue;
  }
  .ep ::-webkit-scrollbar {
    // matches what is set in _global.scss; needs !important to override emoji panel CSS
    width: 10px !important;
  }
}