body {
    background-color: #f1f5f9;
    color: #333;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

h1, h2, h3 {
    color: #444;
    text-align: center;
}

a {
    text-decoration: none;
    color: #0066cc;
}

a:hover {
    color: #0099ff;
}

button {
    background-color: #008CBA;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #005f73;
}

nav {
    background-color: #333;
    padding: 14px;
    display: flex;
    justify-content: space-around;
}

nav a {
    color: #fff;
    padding: 14px 20px;
    text-align: center;
    text-decoration: none;
}

nav a:hover {
    background-color: #575757;
    border-radius: 4px;
}

footer {
    background-color: #333;
    color: white;
    padding: 20px;
    text-align: center;
}

.container {
    max-width: 800px;
    margin: auto;
    padding: 20px;
}

.article {
    margin: 20px 0;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 5px;
}

#froge-content {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}