body {
    background-image: url('background.png');
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    background-color: rgba(255, 255, 255, 0.5);
}

p.main {
    display: inline-block;
    background-color: rgba(0, 0, 0, 0.7);
    color: #ffffff;
    padding: 20px;
    text-align: center;
    border-radius: 10px;
    width: 40%;
    font-size: 18px;
}

p.intro {
    display: inline-block;
    background-color: rgba(0, 0, 0, 0.7);
    color: #ffffff;
    padding: 20px;
    text-align: left;
    border-radius: 10px;
    width: 70%;
    font-size: 15px;
}

textarea.message {
    border: 2px solid #3498db;
    border-radius: 10px;
    padding: 10px;
    width: 70%;
    font-size: 16px;
    font-family: Arial, sans-serif;
    resize: none;
}

textarea.message::placeholder {
    color: #999;
}

textarea.message:focus {
    border-color: #6ab0de;
}

.post-button {
    background-color: #3498db;
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.post-button:hover {
    background-color: #6ab0de;
}

.forum-message {
    background-color: #f5f5f5;
    border: 1px solid #ccc;
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
}

.forum-message p {
    margin: 0;
}

.forum-message .message-content {
    margin-bottom: 10px;
}

.forum-message .timestamp {
    font-size: 12px;
    color: #999;
}