body {
    font-family: 'Lucida Sans', Geneva, sans-serif;
    background-color: #f8f9fa;
    margin: 0;
}
header {
    background-color: #17a2b8;
    color: white;
    text-align: center;
    padding: 1.5rem;
}
nav {
    background-color: #343a40;
    overflow: hidden;
}
nav a {
    float: left;
    display: block;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}
nav a:hover {
    background-color: #ddd;
    color: black;
}
main {
    margin: 2rem;
}
footer {
    background-color: #343a40;
    color: white;
    text-align: center;
    padding: 1rem;
    position: relative;
    bottom: 0;
    width: 100%;
}
form {
    display: flex;
    flex-direction: column;
}
form label {
    margin-top: 10px;
}
form input, form textarea {
    padding: 10px;
    margin-top: 5px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
form button {
    padding: 10px;
    background-color: #17a2b8;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
form button:hover {
    background-color: #138496;
}