body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

.chat-container {
    width: 500px;
    margin: 40px auto;
    background-color: #fff;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.messages {
    padding: 20px;
    border-bottom: 1px solid #ddd;
}

.message {
    margin-bottom: 10px;
}

.my-message {
    background-color: #cce5f5;
    padding: 10px;
    border-radius: 10px;
    text-align: right;
}

.other-message {
    background-color: #f5f5f5;
    padding: 10px;
    border-radius: 10px;
    text-align: left;
}

form {
    padding: 20px;
}

input[type="text"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
}

input[type="submit"] {
    background-color: #4CAF50;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: #3e8e41;
}