.whatsapp_link{
    width: 70px;
    height: 70px;
    position: fixed;
    left: 93vw;
    top: 85vh;
    z-index: 1000;
    background-color: rgb(84,199,95);
    border-radius: 50%;
    text-align: center;
    cursor: pointer;
    animation-delay: 3s;
}

@media(min-width:900px){
    .whatsapp_link{
        left: 93vw;
        top: 85vh;
    }
}
@media(max-width:900px){
    .whatsapp_link{
        left: 78vw;
        top: 78vh;
    }
}

.whatsapp_link i{
    color: white;
    font-size: 3.7em;
}