body {
    background-color: #f5f5f5;
    color: #000000;
    font-family: "Times New Roman", serif;
    margin: 0;
    padding: 0;
}

.container {
    width: 760px;
    margin: 0 auto;
    background-color: #ffffff;
    border: 1px solid #000;
    padding: 20px;
}

.header {
    display: flex;
    align-items: center;
    border-bottom: 2px solid #000;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

    .header img {
        width: 80px;
        margin-right: 15px;
    }

h1 {
    font-size: 24px;
    margin: 0;
}

nav {
    background-color: #cccccc;
    padding: 10px;
    margin-bottom: 20px;
}

    nav a {
        margin-right: 15px;
        text-decoration: none;
        color: #0000cc;
        font-weight: bold;
    }

        nav a:hover {
            text-decoration: underline;
        }

.content {
    font-size: 14px;
    line-height: 1.5;
}

.footer {
    font-size: 12px;
    text-align: center;
    margin-top: 40px;
    color: #555;
    border-top: 1px solid #000;
    padding-top: 10px;
}

.notice {
    background-color: #ffffcc;
    border: 1px dashed #000;
    padding: 10px;
    margin-top: 20px;
    font-size: 13px;
}

.under-construction {
    display: block;
    margin: 20px auto;
    width: 100px;
}