.wa_div{
    display: none;
}
.wa_div_display{
    display: block;
    margin-bottom: 15px;
}
.wa_btn_i{
    display: inline-block;
    background-size: 100%;
    background-image: url('../images/Whatsapp-Big-Image.png');
    width: 150px;
    height: 40px;
}