body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    background-color: #f5f5f5;
}


header {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 15px;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 0;
}

nav li {
    margin: 0 15px;
}

nav a {
    color: white;
    text-decoration: none;
}

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


main {
    display: flex;
    gap: 20px;
    margin: 20px;
}


section {
    flex: 3;
    background-color: white;
    padding: 15px;
}


aside {
    flex: 1;
    background-color: #fafafa;
    padding: 15px;
}

section, aside {
    box-shadow: 0 0 5px rgba(0,0,0,0.2);
}

form {
    display: block;
    margin-top: 10px;
}
footer {
    background-color: #222;
    color: #ddd;
    text-align: center;
    padding: 10px;
}


img {
    display: block;
    margin: 10px 0;
    width: 25%;
    border-radius: 10px;
}