body {
  -webkit-tap-highlight-color: rgba(0,0,0,0);
  -webkit-touch-callout: none;
  color: #212121;
  cursor: default;
  font-family: Helvetica, Arial, sans-serif;
  margin: 0;
  overflow: hidden;
  -moz-user-select: none;
  -ms-user-select: none;
  -webkit-user-select: none;
  user-select: none;
}

body:not(.hover-disabled) .hoverable:hover {
  opacity: 0.6;
}

body.dragging .embed {
  pointer-events: none;
}

body {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  color: #212121;
  cursor: default;
  font-family: Helvetica, Arial, sans-serif;
  margin: 0;
  overflow: hidden;
  -moz-user-select: none;
  -ms-user-select: none;
  -webkit-user-select: none;
  user-select: none;
}

body:not(.hover-disabled) .hoverable:hover {
  opacity: 0.6;
}

body.dragging .embed {
  pointer-events: none;
}

Use 'transparent' keyword in CSS
Use 'transparent' keyword in CSS
