.btn-flotante{font-size:16px;text-transform:uppercase;font-weight:bold;color:#1BA2ED;border-radius:50%;letter-spacing:2px;background-color:#2CA9CA;padding:9px 13px;position:fixed;bottom:20px;right:20px;transition:all 300ms ease 0ms;box-shadow:0px 8px 15px rgba(0,0,0,0.1);z-index:99}.btn-flotante:hover{background-color:#0a0a0a;box-shadow:0px 15px 20px rgba(0,0,0,0.3);transform:translateY(-7px)}@media only screen and (max-width:600px){.btn-flotante{font-size:14px;padding:12px 20px;bottom:20px;right:20px}}.contenedor-boton{position:relative;width:200px;height:60px;display:inline-block}.img-hover{position:absolute;top:0;left:0;opacity:0;transition:opacity 0.3s}.contenedor-boton:hover .img-hover{opacity:1}