body, html {
    margin: 0;
    padding: 0;
    height: auto;       /* fixed vh নয় */
    overflow-x: hidden;
    overflow-y: auto;   /* scroll enable */
}
.font-20 {
    font-size: 20px;
}

.py-100 {
    padding: 6.25rem 0;
}

:root {
    --swiper-navigation-color: #000;
    /* default color */
    --swiper-navigation-size: 30px;
    /* arrow size */
}

.swiper-button-prev:hover,
.swiper-button-next:hover {
    --swiper-navigation-color: red;
    /* hover এ লাল হবে */
}

.bg-blue {
    background-color: #031322;
}