WhatsApp icon in social links

Add this code to Design > Custom CSS. You can replace whatsapp icon in the code with new url (because we can't use code to change its color, so if you need to change to blue, you can send new icon, I will give new code)

/* Whatsapp */
header#header [href*="whatsapp"] {
    background-image: url(https://i.ibb.co/xKZkYDB/whatsapp-icon.png);
    background-position: center center;
    background-size: contain;
    background-repeat: no-repeat;
}
header#header [href*="whatsapp"] svg {
    display: none;
}