* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    color: #333;
    text-align: center;
    margin: 0;
    padding: 0;
}

#content {
    max-width: 100%;
    margin: 0 auto;
    background-color: #fff;
    overflow: hidden;
    display: grid;
    grid-template-rows: auto auto 1fr;
    row-gap: 20px;
    grid-gap: 0;
}


header {
    background-color: #003366;
    color: #fff;
    padding: 20px;
    text-align: left;
    padding: 50px;
}

header h1 {
    margin: 0;
    font-size: 2rem;
}

nav {
    background-color: #337ab7;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    padding: 10px 0;
}

.nav-links {
    display: contents;
}

.nav-links li {
    list-style: none;
}

.nav-links a {
    display: block;
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    padding: 10px 20px;
    border-radius: 5px;
    text-align: center;
    background-color: #337ab7;
}

.nav-links a.active {
    background-color: #66b3ff;
    color: #003366;
}

.main-content {
    background: #fff;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.image-box img {
    width: 100%;
    height: 100vh;
    border-radius: 5px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.text-box {
    text-align: left;
    padding: 20px;
    margin-left: 40px;
}

.text-box h2 {
    color: #0040FF;
    margin-bottom: 15px;
}

#title-join-contact {
    color: #0040FF;
}


.text-box p {
    margin-bottom: 10px;
    font-size: 1rem;
    color: #555;
}

/* join */

.join-content {
    padding: 40px 20px;
    max-width: 800px;
    margin: 0 auto;
}

.join-content h2 {
    color: #003366;
    font-size: 24px;
    margin-bottom: 20px;
}

.join-content p {
    color: #333;
    margin-bottom: 30px;
}



.icon-container img {
    width: 250px;
    height: 170px;
}

.contact-section {
    display: grid;
    gap: 20px;
    grid-template-columns: 1fr;
}

.contact-item {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 15px;
}


@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .text-box {
        text-align: center;
    }

    nav {
        grid-template-columns: repeat(2, 1fr);
    }
}