.single_section {
    position: relative;
    background-color: #FAF9F6;
    padding-bottom: 16rem;
    color: #1A1A1A;
}
.news_decoration{
    left: 0;
}

.single_title {
    font-size: 2.2rem;
    font-weight: 900;
    text-align: center;
    padding-top: 8rem;
    position: relative;
}

.single_title::before {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -2.1rem;
    /*線の上下位置*/
    display: inline-block;
    width: 12rem;
    /*線の長さ*/
    height: 0.1rem;
    /*線の太さ*/
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
    /*位置調整*/
    background-color: #234E45;
    /*線の色*/
}

.single_post_date {
    font-size: 1.6rem;
    text-align: center;
    margin-top: 4.7rem;
    font-weight: 900;
}

.single_category {
    font-size: 1.6rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.2rem;
    font-weight: 900;
}

.single_category span {
    border-bottom: 0.1rem solid #C2C2C2;
}

.thumb {
    width: fit-content;
    margin: 0 auto;
    margin-top: 5rem;
    position: relative;
    z-index: 2;
}

.thumb img {
    width: 88rem;
    height: 49.2rem;
}

.single_content {
    font-size: 1.6rem;
    display: flex;
    flex-flow: column;
    gap: 4rem;
    width: 78rem;
    justify-content: center;
    margin: 0 auto;
    margin-top: 4rem;
}

.single_content figure {
    margin: 0 auto;
}

.single_nav {
    font-size: 1.6rem;
    display: flex;
    gap: 0 18.8rem;
    justify-content: center;
    margin-top: 10.5rem;
}

.single_nav div {
    width: 13.4rem;
}

.prev_nav {
    text-align: right;
}

.next_nav {
    text-align: left;
}

.prev_nav a {
    border-bottom: 0.1rem solid #1A1A1A;
    padding-bottom: 1.5rem;
}

.next_nav a {
    border-bottom: 0.1rem solid #1A1A1A;
    padding-bottom: 1.5rem;
}

.reverse {
    text-align: center;
    border-bottom: 0.1rem solid #1A1A1A;
    padding-bottom: 1.5rem;
}

@media screen and (max-width: 699.98px) {
    .single_title {
        font-size: 1.6rem;
        padding-top: 3rem;
    }

    .single_section {
        padding-bottom: 9rem;
    }

    .single_post_date {
        font-size: 1.4rem;
        margin-top: 4.2rem;
    }

    .single_category {
        font-size: 1.2rem;
    }

    .single_content {
        width: 33.5rem;
        margin-top: 3.2rem;
        gap: 3.3rem;
    }

    .thumb {
        margin-top: 3.5rem;
    }

    .thumb img {
        width: 33.5rem;
        height: 18.7rem;
    }

    .single_nav {
        gap: 6.45rem;
        margin-top: 6.3rem;
    }

    .reverse.sp {
        margin: 0 auto;
        margin-top: 6.1rem;
        font-size: 1.6rem;
        width: 13.4rem;
    }
}