.ir-arriba{
    display: none;
    background:#a09e9e ;
    padding: 5px;
    cursor: pointer;
    font-size: 24px;
    position: fixed;
    bottom: 0px;
    right: 6%;
    color: #ffffff;
    z-index: 200;
    margin-bottom: 30px;
}

@media screen and (max-width: 800px) {
    .ir-arriba
    {
        padding: 4px;
        font-size: 12px;
    }
}