#wa-float{
 position:fixed;
 right:20px;
 bottom:20px;
 z-index:9999;
 width:60px;
 height:60px;
 background:#25D366;
 border-radius:50%;
 box-shadow:0 4px 12px rgba(0,0,0,.3);
 background-image:url('/whatsapp.png');
 background-repeat:no-repeat;
 background-position:center;
 background-size:60%;
}
#wa-float:hover{
 transform:scale(1.05);
 transition:.2s;
}