.banner{
    background-image: linear-gradient( rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6) ), url(/images/banner/2024explanation_banner.jpg);
    width: 100%;
    height: 300px;
    background-size: cover;
    background-repeat: no-repeat;
    /*filter: brightness(60%);*/
}