daker background

.header-section {
    position: relative;
    display: block;
    background: url('images/poster.jpg') center no-repeat;
    background-size: cover;
    overflow: hidden;
    height: auto;
}

.header-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
}

.header-section nav,
.header-section h1,
.header-section p {
    position: relative;
    z-index: 2;
}