.header-banner{
    max-width: 1800px;
    margin: auto;
    height: 500px;
    padding-top: 280px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.968), rgba(3, 60, 122, 0), rgba(0, 0, 0, 0.889)), url(../image/gallery\ img\ 12.jpeg);
    background-position: center;
    background-size: 100% 180%;
    text-align: center;
    margin-top: -80px;
  }

  
.header-banner h1{
    color: white;
    font-weight: 600;
}