body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    font-family: NanumSquareNeoReg;
}

.f-bold {
    font-family: NanumSquareNeoBold !important;
}

.f-exbold {
    font-family: NanumSquareNeoExBold !important;
}

.fn-reg {
    font-family: NanumHumanRegular !important;
}

.fn-bold {
    font-family: NanumHumanBold !important;
}


.main {
    flex-grow: 1;
    padding-bottom: 60px;
    /* Space for footer */
}

.content {
    width: 100%;
    max-width: 720px;
    margin: auto;
}

.hero-section img {
    width: 100%;
    height: auto;
}

.card:hover {
    box-shadow: 0px 4px 15px rgba(0, 0, 0, 0.2);
}

/*.sub-content {*/
/*    border: 1px solid #ccc;*/
/*    padding: 15px;*/
/*    min-height: 780px;*/
/*    background: #fff;*/
/*}*/

.nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-item {
    flex: 1 1 auto;
    text-align: center;
}

.nav-link {
    color: #000;
    position: relative;
    transition: all 0.3s ease-in-out;
    background-color: transparent !important;
}

.nav-link.active {
    color: black !important;
    font-weight: bold;
}

.nav-link.active::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: black;
    display: block;
}

@media (max-width: 700px) {
    .sub-content img {
        width: 100%;
        height: auto;
    }

    .d-flex {
        flex-direction: column;
    }
}

.navbar {
    border: 1px solid #ccc;
    background: #3a3a3a;
    position: sticky;
    top: 0;
    z-index: 9999;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 15px;
}

.navbar img {
    height: 40px;
}

@media (max-width: 420px) {
    .navbar img {
        height: 20px;
    }

    .navbar h3 {
        font-size: 14px;
    }
}

a {
    text-decoration: none;
    color: #fff;
}

p {
    margin: 0;
    padding: 0;
}
.first_comment {
    display: inline-block;
    height: 16px;
    margin: 2px 3px 0 0;
    padding: 0 5px;
    border: 1px solid #ffb7bb;
    background-color: #fff3f4;
    color: #ff5656;
    border-radius: 25px;
    line-height: 1.4;
    font-size: 10px;
    box-sizing: border-box;
    vertical-align: top;
    outline: 0;
}