#btn_scrolltop{
    position: fixed;
    bottom: 20px;
    right: -100px;
    width: 40px;
    /* transition: all 1.5s; */
    cursor: pointer;
    z-index: 90000 !important;
}
#bajar{
    position: fixed;
    bottom: 20px;
    right: -100px;
    width: 40px;
    /* transition: all 1.5s; */
    cursor: pointer;
    z-index: 90000 !important; 
}