#div-fixa {
    position: fixed;
    bottom: 20px;
    margin: 0 20px;
    background: rgb(89, 245, 122);
    width: 230px;
    border-radius: 50px;
    cursor: pointer;
    transition: 0.5s all;
}

#div-fixa.shrink {
    width: 50px;
    transition: 0.5s all;
    overflow: hidden;
}

#div-fixa img {
    width: 50px;
    height: 50px;
}

#div-fixa a .flex-itens {
    display: flex;
    align-items: center;
}

#div-fixa a .flex-itens span {
    display: block;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-weight: bold;
    color: #030405;
    margin-left: 6px;
    font-size: 15px;
    min-width: 170px;
    opacity: 0;
}

#div-fixa a .flex-itens span.aparecer {
    transition: 0.5s all;
    opacity: 1;
}

.flutuar {
     animation-name: flutuar;
     animation-duration: 0.7s;
     animation-iteration-count: infinite;
     animation-direction: alternate;
     animation-timing-function: ease-in-out;
}

@keyframes flutuar {
      from {
        transform: translate3d(0, 0, 0);
        filter: brightness(100%);
      }
      to {
        transform: translate3d(0, -15px, 0);
        filter: brightness(150%);
      }
}