body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    margin: 0;
    background: #f9f9f9;
    color: #333;
}
header, footer {
    background-color: #0e76a8;
    color: #fff;
    padding: 1em;
    text-align: center;
}
nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 10px;
}
.container {
    max-width: 900px;
    margin: auto;
    padding: 1em;
}
article {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px #ccc;
    padding: 1em;
    margin-bottom: 1em;
}
input[type="text"], textarea {
    width: 100%;
    padding: 0.5em;
    margin-top: 0.5em;
}
form {
    background: #fff;
    padding: 1em;
    box-shadow: 0 0 5px #bbb;
    border-radius: 8px;
}
button {
    background-color: #0e76a8;
    color: white;
    border: none;
    padding: 0.5em 1em;
    margin-top: 0.5em;
    cursor: pointer;
}
footer {
    margin-top: 2em;
}