* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Courier New', monospace;
    line-height: 1.6;
    color: #333;
    background-color: darkseagreen;
}
header {
    background-color: seagreen;
    color: white;
    padding: 15px 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}
.logo-container {
    width: 80px;
}
.logo {
    width: 100%;
    height: auto;
}
.navbar {
    width: 100%;
}
.nav-menu {
    display: flex;
    flex-direction: column;
    list-style: none;
    gap: 10px;
}
.nav-menu li {
    width: 100%;
}
.nav-menu a {
    display: block;
    color: white;
    text-decoration: none;
    background-color: darkseagreen;
    padding: 10px;
    text-align: center;
    border-radius: 4px;
    font-size: 14px;
    transition: background-color 0.3s;
}

.nav-menu a:hover {
    background-color: #1abc9c;
}
main {
    padding: 15px;
}
h1 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #2c3e50;
}
h2 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #34495e;
    border-bottom: 2px solid #1abc9c;
    padding-bottom: 5px;
}
p {
    font-size: 14px;
    margin-bottom: 15px;
    line-height: 1.8;
}
article {
    margin-bottom: 20px;
    background-color: white;
    padding: 15px;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.content-image {
    width: 100%;
    height: auto;
    margin: 15px 0;
    border-radius: 4px;
}
.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 15px;
    font-size: 12px;
    margin-top: 20px;
}
@media (min-width: 600px) {
    header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 20px;
    }

    .logo-container {
        width: 100px;
    }

    .navbar {
        flex: 1;
    }

    .nav-menu {
        flex-direction: row;
        justify-content: flex-end;
        gap: 20px;
    }

    .nav-menu li {
        width: auto;
    }

    .nav-menu a {
        padding: 12px 16px;
        font-size: 16px;
    }

    main {
        padding: 30px;
    }

    h1 {
        font-size: 32px;
        margin-bottom: 30px;
    }

    h2 {
        font-size: 22px;
        margin-bottom: 15px;
    }

    p {
        font-size: 16px;
    }

    article {
        padding: 20px;
        margin-bottom: 25px;
    }

    .content-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .content-image {
        display: block;
        width: 100%;
        height: auto;
    }

    footer {
        padding: 20px;
        font-size: 14px;
    }
}
@media (min-width: 1200px) {
    header {
        padding: 25px 40px;
        gap: 30px;
    }

    .logo-container {
        width: 120px;
    }

    .navbar {
        flex: 1;
    }

    .nav-menu {
        gap: 30px;
        justify-content: flex-end;
    }

    .nav-menu a {
        padding: 14px 20px;
        font-size: 18px;
    }

    main {
        max-width: 1400px;
        margin: 0 auto;
        padding: 40px;
    }

    h1 {
        font-size: 40px;
        margin-bottom: 40px;
    }

    h2 {
        font-size: 26px;
        margin-bottom: 20px;
    }

    p {
        font-size: 18px;
        line-height: 2;
    }

    article {
        padding: 25px;
        margin-bottom: 30px;
    }

    .content-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    .content-image {
        display: block;
        width: 100%;
        height: auto;
        max-width: 400px;
    }

    footer {
        padding: 30px;
        font-size: 16px;
    }
}