body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
}

.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
}

.main-header {
    background: #333;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

.main-header h1 {
    margin: 0;
}

.main-header p {
    margin: 10px 0 0;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

.section {
    padding: 20px 0;
    border-bottom: 1px solid #ccc;
}

.section h2 {
    text-align: center;
    margin-bottom: 20px;
}

.article h3 {
    color: #333;
}

form {
    max-width: 500px;
    margin: auto;
}

form label {
    display: block;
    margin: 10px 0 5px;
}

form input, form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

form button {
    background: #333;
    color: #fff;
    border: 0;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
}

.main-footer {
    text-align: center;
    padding: 10px 0;
    background: #333;
    color: #fff;
}