.banner {
    position: relative;
}

.banner .img-box::before {
    padding-top: 32.5%;
}

.banner .img-box .bg {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    background-color: hsla(0, 0%, 0%, 1);
    opacity: .15;
}

.banner-text {
    position: absolute;
    width: 800px;
    height: 100%;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    row-gap: 20px;
    color: #fff;
    font-size: 18px;
    text-align: center;
    line-height: 1.5;

}

.banner-text h4 {
    font-size: 50px;
    line-height: 1.2;
}

@media screen and (max-width:769px) {
    .banner .img-box::before {
        padding-top: 80%;
    }

    .banner-text {
        width: 100%;
        font-size: 14px;
    }

    .banner-text h4 {
        font-size: 28px;
    }
}