#header-section {
    margin-top: 60px;
    position: relative;
    min-height: 500px;
    background: url('../img/header02.jpg');
    background-attachment: fixed;
    background-size: cover;
    background-repeat: no-repeat;
    color: #fff;
}

#header-section .dark-overlay {
 
    top: 0;
    left: 0;
    width: 100%;
    min-height: 500px;
    background: rgba(0, 0, 0, 0.6);