.header{
    position: relative;
}

.header .backdrop-banner{
    width: 100%;
    height: 100%;
    z-index: 7;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
}

.header img{
    margin: 0 auto;  
    display: block;
    z-index: 6;
}

.header .btn-facturacion-electronica{
    display: block;
    position: absolute;
    top:200px;
    left: 0;
    right: 0;
    bottom: 0;
    margin-left: auto;
    margin-right: 10%;
    /*left: 1300px;*/
    background: url(/img/btn-banner-facturacion-electronica.png);
    background-size: cover;
    background-repeat: no-repeat;
    width: 422px;
    height: 144px;
    z-index: 8;
}

.header .btn-facturacion-electronica:hover{
    cursor: pointer;
    width: 423px;
    height: 145px;
}