.footer-icon {
position: fixed;
display: block;
width: 64px;
height: 64px;    
z-index: 10;
}
.footer-icon img {
width:100%;
}
.phone-icon {
left: 10px;
bottom: 10px;
}
.whatsapp-icon {
right: 10px;
bottom: 10px;
width: 60px;
}