body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: calc(100vh-60px);
    margin: 0;
    padding: 8em;
    line-height: 1.5;
    flex-direction: column;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #f2f2f2;
    padding: 1rem;
    z-index: 1000;
}

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

nav ul li {
    margin: 0 1rem;
}

nav ul li a {
    text-decoration: none;
    color: #333;
}

#contact-form {
    display: flex;
    flex-direction: column;
    width: 300px;
}

#contact-form label {
    margin-top: 1rem;
}

#contact-form input,
#contact-form textarea {
    padding: 0.5rem;
    margin-top: 0.5rem;
}

#contact-form button {
    margin-top: 1rem;
    padding: 0.5rem;
    background-color: #333;
    color: white;
    border: none;
    cursor: pointer;
}

#chat-container {
    width: 100%;
    max-width: 500px;
    margin: 2em auto;
    background: #fafafa;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 1em;
    display: flex;
    flex-direction: column;
    min-height: 300px;
}

#chat-messages {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 1em;
    max-height: 250px;
    padding: 0.5em;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 4px;
}

#chat-form {
    display: flex;
    gap: 0.5em;
}

#chat-input {
    flex: 1;
    padding: 0.5em;
    border: 1px solid #ccc;
    border-radius: 4px;
}

#chat-form button {
    padding: 0.5em 1em;
    background: #333;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#chat-room-selector {
    width: 100%;
    max-width: 500px;
    margin: 1em auto 0 auto;
    display: flex;
    align-items: center;
    gap: 1em;
}