body {
    box-sizing: content-box;
}

.article {
    max-width: 1200px;
    margin: 110px auto 0;
}

main {
    margin-bottom: 4em;
    padding: 0 20px;
}

main .btn-1 {
    padding: 10px 20px;
    font-size: 16px;
    margin: 1em auto;
}

.work-wr p {
    line-height: 1.8;
}

.work-wr img {
    margin: 1em 0;
    object-fit: cover;
    margin: 1em auto;
    object-fit: cover;
    max-width: 480px;
}

.work-wr .image {
    width: calc(100% + 40px);
    margin: 1em 0 1em -20px;
    display: flex;
    gap: 1%;
    aspect-ratio: 3/2;
    max-width: 480px;
}

.work-wr .image img:first-child {
    width: 59.5%;
}

.work-wr .image img:last-child {
    width: 39.5%;
    object-position: 84% 50%;
}

.work-wr .image.img-half img {
    width: 49.5%;
    object-position: center;
}

.work-wr .imgs-inner {
    display: block;
}

.work-wr .image.imgs-inner img {
    width: 100%;
}

.work-wr .image.single-img img {
    width: 100%;
    object-position: center;
}

.curb .imgs img {
    margin: 1em auto;
    max-width: 480px;
}

@media(min-width:480px) {
    .work-wr .image {
        margin: 1em auto;
        width: 100%;
    }
}

@media(min-width:640px) {
    hgroup {
        text-align: center;
    }
    
    div.work-wr {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 1%;
    }

    div.work-wr:nth-of-type(2n) {
        flex-direction: row-reverse;
    }
    
    .work-wr .image {
        margin: 0;
        width: 49%;
    } 
    
    .work-wr p {
        width: 49%;
    }

    .work-wr .imgs-inner {
        display: flex;
        gap: 1%;
        aspect-ratio: 3/2;
        max-width: 480px;
    }

    .work-wr .image.imgs-inner img {
        width: 49.5%;
        margin-left: 0;
    }

    .curb .imgs {
        display: flex;
        justify-content: center;
        gap: 2%;
        margin: 3em 0;
    }

    .curb .imgs img {
        width: 49%;
        margin: 0;
    }
}

.next-page {
    background-repeat: no-repeat;
    background-size: cover;
    padding-top: 72px;
}

.concrete .next-page {
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.5)),url(./formwork.jpg);
    background-position: center;
}

.formwork .next-page {
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.5)),url(./curb.jpg);
    background-position: bottom;
}

.curb .next-page {
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.5)),url(./fibc.jpg);
    background-position: 50% 75%;
}

.fibc .next-page {
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.5)),url(structures.jpg);
    background-position: center 45%;
    padding-top: 16px;
}