.post_box {
    display: flex;
    gap: 50px;
    justify-content: center;
    margin: 10px auto;
    max-width: 1100px;
    width: 100%;
}
.post_content {
    flex: 3;
}

.post_side_munu {
    flex: 1;
}

.post_title {
    font-weight: 500;
    font-style: normal;
    border-bottom: 3px solid #bfbfbf;
    padding-bottom: 15px;
    margin-bottom: 25px;
    font-size: 32px;
}

.post_pdf_box {
    display: flex;
    border: 1px solid #c6c6c6;
    padding: 20px 25px;
    margin: 20px;
}

.post_pdf_box:hover {
    opacity: 0.7;
}

.post_pdf_box a {
    position: relative;
    padding-left: 40px;
}

.post_pdf_box a:before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);

    width: 24px;
    height: 24px;

    background-image: url('/img/ir/tanshin/icon_tanshin_01.png');
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
}

.post_detail{
    display: flex;
    align-items: center;
    line-height: 1;
    font-weight: bold;
    font-style: normal;
    margin-bottom: 10px;
    gap:10px;
    list-style: none;
    padding: 0;
}

.post_main_contet a {
    color: revert;
    text-decoration: revert;
    cursor: revert;
}

@media (max-width: 1023.9px) {
    .post_box {
        flex-direction: column;
        padding: 10px 20px;
        box-sizing: border-box;
    }
}