.wa-icon {
    width: 30px;
    height: 30px;
    fill: white;
}            

/* Variant 7: Neon Glow */
.btn-7 {
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 0 20px #25d366, 0 0 40px #25d366;
}
.btn-7:hover {
    box-shadow: 0 0 30px #25d366, 0 0 60px #25d366, 0 0 90px #25d366;
}