body {
    font-family: Arial;
    background: #f0f2f5;
}

.login-box,
.chat-container {
    width: 400px;
    margin: 50px auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
}

input {
    width: 75%;
    padding: 10px;
}

button {
    padding: 10px 15px;
    cursor: pointer;
}

#chat-box {
    height: 400px;
    overflow-y: scroll;
    border: 1px solid #ccc;
    padding: 10px;
    margin-bottom: 10px;
    background: #fafafa;
}

.message {
    margin-bottom: 10px;
    padding: 8px;
    background: #e9ecef;
    border-radius: 5px;
}