Не знаю, как решить эту проблему с адаптивным дизайном

.grid-cols-12 {
    grid-template-columns: repeat(12,minmax(0,1fr))!important;
}
.grid {
    display: grid!important;
}
.gap-4 {
    grid-gap: 1rem!important;
    gap: 1rem!important;
}

.col-span-12 {
    grid-column: span 12/span 12!important;
}
.col-span-8 {
    grid-column: span 8/span 8!important;
}

@media (min-width: 992px) {
    .lg\:col-span-8 {
        grid-column: span 8/span 8!important;
    }
    .lg\:col-span-4 {
        grid-column: span 4/span 4!important;
    }
}

<section style = "background-color: yellow;">
        <div style = "max-width: 1140px; margin: 0 auto; border: 2px solid black;">
            <div class = "grid grid-cols-12 gab-0 gap-4">
                <div class = "col-span-12 lg:col-span-8">Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</div>
                <div class = "col-span-12 lg:col-span-4" style = "background-color: white; border: 2px solid black; border-radius: 10px;">A-Side</div>
            </div>
        </div>
    </section>

    <section style = "background-color: red;">
        <div style = "max-width: 1140px; margin: 0 auto">
            <div class = "grid grid-cols-12 gab-0 gap-4">
                <div class = "col-span-8">Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</div>
            </div>
        </div>
    </section>

    <section style = "background-color: black;">
        <div style = "max-width: 1140px; margin: 0 auto">
            <div class = "grid grid-cols-12 gab-0 gap-4">
                <div class = "col-span-8"><p style = "color: white;">Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p></div>
            </div>
        </div>
    </section>