.wcb-whatsapp{
position:fixed;
right:25px;
bottom:25px;
width:60px;
height:60px;
border-radius:50%;
background:#25D366;
color:#fff;
display:flex;
align-items:center;
justify-content:center;
font-size:32px;
text-decoration:none;
z-index:999999;
box-shadow:0 3px 10px rgba(0,0,0,.3);
}
.wcb-whatsapp:hover{opacity:.85;}