واجهة المنتدى

.header_c {
    background-image: url(https://i97.servimg.com/u/f97/16/46/77/76/alfate10.png);
    background-repeat: no-repeat;
    height: 320px;
    width: 636px;
    position: relative;
    margin-right: auto;
    margin-left: auto;
}