.in-article-ad {
    max-width: 625px;      /* <= your content width */
    margin: 24px auto;     /* center + breathing room */
}

.in-article-ad > .adsbygoogle {
    display: block;
    width: 100%;
    text-align: center;

    /* CLS guard: reserve some space so the page doesn't jump */
    min-height: 160px;     /* tweak between 160–280px per your layout */
    max-height: 280px;
    max-width: 625px;      /* <= your content width */
   
    /* Optional: keep proportions predictable while loading */
    aspect-ratio: 6 / 1;   /* remove if you don't want a fixed ratio */

    overflow: hidden;
}

@media screen and (max-width: 1024px) {

}

@media (max-width: 769px) {
    .in-article-ad {
        max-width: 350px;      /* <= your content width */
        margin: 24px auto;     /* center + breathing room */
    }

    .in-article-ad > .adsbygoogle {
        max-width: 350px;      /* <= your content width */
        max-height: 290px;
        margin: 24px auto;     /* center + breathing room */
        aspect-ratio: 1.5 / 1;   /* remove if you don't want a fixed ratio */
    }
}