.btn-wsp{position:fixed;border:0;width:60px;height:60px;line-height:63px;bottom:25px;right:25px;background:#25d366;color:#fff;border-radius:50px;text-align:center;font-size:35px;box-shadow:0 1px 10px rgba(0,0,0,.3);z-index:100;transition:all .3s ease}.btn-wsp:hover{background:#20ba5a}@media only screen and (min-width:320px) and (max-width:768px){.btn-wsp{width:63px;height:63px;line-height:66px}}