#sp_btn_subir{
    cursor: pointer;
    position: fixed;
    opacity: 0;
    width: 64px;
    height: 64px;
    right: 48px;
    bottom: 100px;
    background-color: #ef3e29;
    border-radius: 0%;
    flex-direction: row;
    display: flex;
    justify-content: center;
    align-items: center;
    border: none!important;
    z-index: 100;
    padding: 0;
    margin: 0;
    box-shadow: 0 0 8px rgba(0,0,0,.125);
    transition: opacity 0.3s, visibility 0.3s;
}

#sp_btn_subir svg{
    fill: white!important;
}


@media (max-width: 767px){
    #sp_btn_subir{
        display: flex;
        bottom: 92px;
        right: 16px;
        width: 48px;
        height: 48px;
    }
}