.header {border-bottom: 1px solid rgba(217, 217, 217, 0.6);z-index: 9999;position: sticky;left: 0;top: 0;max-width: 1920px;width: 100%;margin: auto; } .header-img {margin-top: -6rem;position: relative; } .header-img::after {content: "";position: absolute;top: 0;left: 0;width: 100%;height: 100%;background-color: rgba(0, 0, 0, 0.5);z-index: 2; } .header-img .container {position: absolute;bottom: 0;left: 50%;transform: translateX(-50%);z-index: 3; } @media (max-width: 991.98px) {.header-img {margin-top: 0;} }