#btn-floating-whats {
    z-index: 100;
    position: fixed;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 5rem;
    height: 5rem;
    border: 0;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background-color: rgb(4 172 36 / 0.85);
    outline: rgb(0 0 0 / 0.05) solid 1px;
    color: rgb(255 255 255 / 100);
    border-radius: 50%;
    transition: 0.5s;
    animation: shadow-pulse 1.5s infinite;
}

#btn-floating-whats:hover {
    background-color: rgb(4 172 36 / 0.85);
    color: rgb(255 255 255 / 0.85);
    -ms-transform: scale(1.5);
    -webkit-transform: scale(1.5);
    transform: scale(1.1);
}

@keyframes shadow-pulse {
    0% {
        box-shadow: 0 0 0 0px rgba(4, 172, 36, 0.5);
    }

    100% {
        box-shadow: 0 0 0 35px rgba(4, 172, 36, 0);
    }
}

span.hidden {
    visibility: hidden;
    display: none;
}