.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(--color-primary);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(--color-second);}