@media (width <= 768px) {
    header nav ul {
        flex-direction: column;
    }

    section#slogan {
        padding: 2rem;
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    section#slogan h1 {
        text-align: center;
    }

    section#slogan h2 {
        text-align: center;
    }

    section#urunler {
        padding: 2rem;
    }

    section#urunler .urunler-group {
        flex-direction: column;
        align-items: center;
    }

    section#urunler .urunler-group .category {
        height: 10rem;
        margin-top: 2rem;
        margin-bottom: 2rem;
    }

    section#urunler .urunler-group .urunler-list {
        height: auto;
    }

    section#urunler .urunler-group .urunler-list .card-list {
        grid-template-rows: 1fr 1fr 1fr;
        grid-template-columns: 1fr;
    }

    section#hakkimizda {
        grid-template-columns: 1fr;
    }

    section#hakkimizda .text {
        padding: 3rem;
    }

    section#katalog {
        padding: 2rem;
    }

    section#katalog h1 {
        letter-spacing: normal;
        font-weight: 500;
    }

    section#katalog .group {
        grid-template-columns: 1fr;
    }

    footer.katalogfooter, section#iletisim {
        padding: 3rem;
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    footer.katalogfooter .isim, section#iletisim .isim {
        text-align: center;
    }

    section#kategori {
        padding: 2rem;
    }

    section#kategori .urunler {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    section#urun h3 {
        padding-left: 2rem;
    } 

    section#urun .urun-container {
        padding: 0;
        grid-template-columns: 1fr;
        height: auto;
    }

    section#urun .urun-container .photo {
        padding: 2rem;
    }

    section#benzerurunler {
        padding: 2rem;
    }

    section#benzerurunler .urunler-group .urunler-list {
        height: auto;
    }

    section#benzerurunler .urunler-group .urunler-list .card-list {
        grid-template-columns: 1fr;
    }

    section#hakkimizda {
        height: auto;
    }

    section#slogan .text h1 {
        line-height: 2.5rem;
    }

    section#urunler .urunler-group:nth-child(4n) {
        flex-direction: column;
    }
}