* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}
body {
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
    padding: 20px;
    max-width: 1200px;
    margin: auto;
}
header {
    text-align: center;
    padding: 20px;
}
header h1 {
    color: #2a7ae2;
}
header p {
    font-size: 14px;
    color: #666;
}
nav {
    display: flex;
    justify-content: space-around;
    margin: 20px 0;
}
nav a {
    text-decoration: none;
    color: #fff;
    background-color: #2a7ae2;
    padding: 10px 20px;
    border-radius: 5px;
    border: 1px solid #1d5bbf;
    transition: background-color 0.3s;
}
nav a:hover {
    background-color: #1d5bbf;
}
.content {
    margin: 20px 0;
}
.content img {
    max-width: 100%;
    height: auto;
    margin-bottom: 20px;
}
footer {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: #666;
}
@media (max-width: 768px) {
    nav {
        flex-direction: column;
    }
    nav a {
        margin-bottom: 10px;
    }
}