.side-bar{bottom:200px;position:fixed;right:10px;z-index:999;}
.side-bar a{
  display:block;
  cursor:pointer;
  width:46px;
  height:46px;
  line-height:46px;
  background: var(--san-service-background-color);
  position:relative;
  text-align:center;
  box-sizing:
  border-box;
  border-radius:5px;
}
.side-bar a+a{margin-top:10px;}
.side-bar a i{
  display:inline-block;
  font-size:30px;
  color: var(--san-service-icon-color);
  
}
.side-bar a:last-child i{
  font-size:22px;
}
.side-bar a:hover {background: var(--san-service-background-color-hover);}