.banner__img{
    width: 100%;
    height: calc(100vh - 76px);
    background: url('../../img/banner.png') no-repeat center/cover fixed;
    /*
    background-repeat: no-repeat;
    background-size:cover;
    background-attachment:fixed;
    background-position: center;
    */
}

@media screen and (max-width: 780px) {
    .banner__img{
        height: calc(100vh - 20vh);
    }
}

@media screen and (max-width: 320px) {
    .banner__img{
        height: calc(100vh - 30px);
    }
}