.wwc-button{
    position:fixed;
    bottom:24px;
    width:60px;
    height:60px;
    border-radius:50%;
    background:#25D366;
    display:flex;
    align-items:center;
    justify-content:center;
    z-index:99999;
    box-shadow:0 8px 25px rgba(0,0,0,.18);
    transition:.3s;
}

.wwc-button:hover{
    transform:translateY(-4px);
}

.wwc-right{
    right:24px;
}

.wwc-left{
    left:24px;
}

@media(max-width:768px){
    .wwc-button{
        width:56px;
        height:56px;
        bottom:18px;
    }
}