*body {
    background-color: #F1F5F9;
    font-family: Arial, sans-serif;
    margin: 20px;
    color: #1E293B;
}

header {
    background-color: #1E3A5F;
    color: white;
    text-align: center;
    padding: 20px;
    border-radius: 10px;
}

nav {
    background-color: #FFFFFF;
    padding: 15px;
    text-align: center;
    border-radius: 8px;
    margin-top: 10px;
}

nav a {
    color: #2563EB;
    text-decoration: none;
    margin: 10px;
    font-weight: bold;
}

nav a:hover {
    color: #0F172A;
}

select {
    padding: 7px;
    border: 1px solid #CBD5E1;
    border-radius: 5px;
}

section, aside {
    background-color: white;
    padding: 20px;
    margin-top: 15px;
    border-radius: 10px;
}

h2 {
    color: #1E3A5F;
}

img {
    margin: 5px;
    border-radius: 8px;
    border: 2px solid #E2E8F0;
}

audio, video {
    margin-top: 10px;
    max-width: 100%;
}

footer {
    background-color: #1E3A5F;
    color: white;
    text-align: center;
    padding: 12px;
    margin-top: 15px;
    border-radius: 8px;
}