@media (max-width:425px){
    .banner-sticky {
        box-sizing: border-box;
        position: fixed;
        bottom: 0;
        left: 0;
        z-index: 5;
        width: 100%;
        height: auto;
        padding: 5px 0 4px;
        text-align: center;
        background-color: #fff;
        border-top: 1px solid #ddd;
        opacity:1;
    }
    .banner-sticky .cerrar {
        position: absolute;
        top: -28px;
        right: 0px;
        display: block;
        padding: 2px 0 0 2px;
        background-color: #fff;
        border-left: 1px solid #ddd;
        border-top: 1px solid #ddd;
        border-radius: 6px 0 0 0;
        z-index: 99;
        font-size: 16px;
        width: 26px;
        height: 28px;
        font-family: raleway;
        font-weight: bold;
    }
}