.footer-bg{
    position: relative;  z-index: 10;
}
.footer-bg:before{
    background:url(../img/footer-bg-aydin-pulluk.png) no-repeat left top; background-size: cover; position:absolute; right: 0; top: 0; width: 800px;
    height: 100%; bottom: 0; content: ""; z-index: 0;
}