.caixa-ligacao {
    position: fixed;
    box-sizing: border-box;
    min-width: 66px;
    height: 66px;
    left: 20px;
    bottom: 20px;
    background-color: rgba(0, 0, 0, 0);
    z-index: 99999;
}

.circulo-ligacao {
    background-color: #ffa801;
    border-radius: 50%;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    overflow: hidden;
    box-sizing: border-box;
    cursor: pointer;
}

@media only screen and (min-width: 768px) {
    .caixa-ligacao,
    .b24-widget-button-shadow,
    .b24-widget-button-wrapper,
    .b24-widget-button-position-bottom-left,
    .b24-widget-button-visible {
        display: none !important;
    }
}