body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
}
.container {
    width: 80%;
    margin: auto;
    padding: 20px;
}
.activity-detail {
    background-color: #fff;
    border: 2px solid #4CAF50;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
.activity-detail img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 10px;
}
.activity-detail h1 {
    margin-top: 20px;
    font-size: 24px;
}
.activity-info {
    margin: 20px 0;
}
.activity-info p {
    margin: 5px 0;
}
.description {
    font-size: 16px;
    color: #555;
}
.comments-section {
    margin-top: 40px;
}
.comments-section h2 {
    font-size: 20px;
}
.comments-section textarea {
    width: 100%;
    height: 100px;
    padding: 10px;
    margin-top: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 14px;
}
.comments-section button {
    margin-top: 10px;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
.comments-section button:hover {
    background-color: #0056b3;
}