picture {
    display: block;
}

picture {
    img {
        width: 100%;
        height: auto;
        object-fit: cover;
    }
}

img {
    /* opacity:0; */
    transition: opacity 50ms ease-in-out;
}

img.ai-loaded {
    opacity: 1;
}

.section1 {
    max-width: 900px;
}

.section2 {
    width: 200px;
}

img {
    width: 100%;
    height: auto;
    display: block;
    background:red;
}

.section3 {
    width: 50%;
}

.section4 {
    display:grid;
    grid-template-columns: 300px auto;
    width: 1000px;
    height:300px;
}

.swiper-container {
    width: 1200px;
    margin: auto;
    overflow: hidden;
}

[ai-bg-src] {
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    transition: opacity 0.120s ease-in-out;
    opacity: 0;
}

.ai-bg-loaded {
    opacity: 1;
}