/* pc */
header {
    position: sticky;
    top: 0;
    left: 0;
    z-index: 9;
    background-color: #fff;
}

header #header_wrap {
    width: 100%;
}

.header_top {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 100px;
    padding: 13px 0;
    background-color: var(--main-color);
}

.header_top .text_wrap {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header_top .text_wrap .logo {
    width: 74px;
    display: flex;
}

.header_top .text_wrap .top_title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
}

.header_top .top_close {
    display: flex;
    width: 24px;
    padding: 0;
    background-color: transparent;
}

.header_main {
    padding: 8px 0;
    border-top: 1px solid #BBBBBB;
    border-bottom: 1px solid #BBBBBB;
}

.header_content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header_content h1 {
    display: flex;
    align-items: center;
    gap: 0 6px;
}

.header_content h1 .head_mascot {
    max-width: 100px;
}

.header_content .logo {
    display: flex;
    width: 130px;
}

.header_content nav {
    display: flex;
}

.header_content .nav_item {
    display: flex;
    justify-content: center;
    padding: 13px 0;
    width: 150px;
    font-size: 16px;
    font-weight: 400;
    color: #222;
}

.header_content .nav_item.active {
    font-weight: 700;
    color: var(--main-color);
}

.header_content .session_wrap {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header_content .session_wrap .date {
    font-size: 20px;
    font-weight: 700;
    color: var(--main-color);
    padding: 7px 34px 7px 22px;
    border-radius: 8px;
    background: url(/static/app_admin/base/img/icon_select_down.png) no-repeat calc(100% - 10px) 50% / 20px auto;
}

.header_content .session_wrap .sound_btn>img {
    display: none;
}

.header_content .session_wrap .sound_btn>img.active {
    display: block;
}