body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

#chat-container {
    max-width: 600px;
    margin: 0 auto;
    background-color: #fff;
    display: flex;
    flex-direction: column;
    height: 100vh;
    border: 1px solid #ccc;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

header {
    background-color: #075e54;
    color: white;
    text-align: center;
    padding: 10px 0;
}

#chat-box {
    flex-grow: 1;
    padding: 10px;
    overflow-y: auto;
    background-color: #e5ddd5;
}

.message {
    margin: 10px 0;
    padding: 10px;
    border-radius: 5px;
    max-width: 70%;
}

.joao {
    background-color: #dcf8c6;
    align-self: flex-start;
}

.sr-pedro {
    background-color: #fff;
    align-self: flex-start;
}

.leonardo {
    background-color: #d1f7ff;
    align-self: flex-start;
}

.name {
    font-weight: bold;
    display: block;
}

footer {
    display: flex;
    padding: 10px;
    background-color: #f5f5f5;
    border-top: 1px solid #ccc;
}

#message-input {
    flex-grow: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin-right: 10px;
}

#send-button {
    background-color: #075e54;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
}

#send-button:hover {
    background-color: #0b7d65;
}