/*--------------------------------------------------------------------------------
　活動報告　詳細
--------------------------------------------------------------------------------*/
/*.main_top { display: none;}*/
/*.contents { padding: 10px 0 80px;}*/
/*#nav_box { padding: 20px 0 0;}*/
/*#news_box { padding: 0;}*/
.blog_s_box {
    display: flex;
    flex-direction: row-reverse;
    padding: 50px 0;
    width: 100%;
}
.blog_s_box > .blog_left_box {
    padding-right: 5%;
    width: 30%;
}
.blog_s_box > .blog_right_box {
    width: 70%;
}
.blog_right_box .blog_title {
    border-bottom: 1px solid #bfbfbf;
    color: #333;
    font-size: 24px;
    font-weight: bold;
}
.blog_right_box .blog_data {
    color: #999999;
    display: block;
    font-size: 12px;
    padding: 10px 0;
}
.blog_right_box .blog_img {
    padding: 10px 0;
    text-align: center;
}
.left-nav .bg_title {
    background-color: #e3d9c4;
    color: #330000;
    font-size: 18px;
    font-weight: bold;
    padding: 3px 15px;
}
.left-nav .bg_title {
    background-color: #e3d9c4;
    color: #330000;
    font-size: 18px;
    font-weight: bold;
    padding: 3px 15px;
}
.left-nav ul {
    font-size: 0;
    padding: 20px 0;
}
.left-nav ul li a {
    border-bottom: 1px solid #bfbfbf;
    display: block;
    font-size: 14px;
    padding: 5px 0;
}
.left-nav ul li:first-child a {
    border-top: 1px solid #bfbfbf;
}
.left-nav ul li a span.day {
    color: #999999;
    display: block;
    font-size: 12px;
}

@media screen and (max-width:900px) {

}

@media screen and (max-width:640px) {

    .blog_s_box {
        display: block;
    }
    .blog_s_box > .blog_right_box {
        width: 100%;
    }
    .blog_s_box > .blog_left_box {
        padding: 30px 0 0;
        width: 100%;
    }
    .blog_right_box .blog_title {
        font-size: 20px;
    }
}