.ui {
  position: absolute;
  z-index: 100;
  bottom: 0;
  left: 0;
  width: 100%;
  height: auto;
  margin: 0;
  padding: 10px 15px 30px;
  text-align: center;
  box-sizing: border-box;
}
.ui a {
  display: inline-block;
  width: 60px;
  height: 60px;
  background-color: #ffffff;
  line-height: 100%;
  color: #303030;
  margin: 10px 3px;
  border-radius: 50%;
  position: relative;

}
.ui a i {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
}
.ui a:active {
  color: #ff0000;
}
#snap {
  max-width: 100%;
  height: auto;
  display: block;;
  visibility: hidden;
}
.ui a.disabled {
  pointer-events: none;
  color: #cccccc;
}
#snap.visible {
  visibility: visible;
}