.side-bar{bottom:200px;position:fixed;right:10px;z-index:999;}
.side-bar a{  display: flex;
  justify-content: center;
  align-items: center;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:26px;color: var(--san-service-icon-color);}
.side-bar a:hover{background: var(--san-service-background-color-hover);}
@media screen and (max-width: 768px){
  .side-bar a{
    width: 30px;
    height: 30px;
  }
  .side-bar a i{
    font-size: 20px;
  }
}