.challenges-container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.section {
    margin: 20px 0;
    padding: 20px;
    background-color: #f1f1f1;
    border-left: 5px solid #c0392b;
    border-radius: 5px;
    transition: background-color 0.3s, box-shadow 0.3s;
}
.section:hover {
    background-color: #e9e9e9;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}
.section a {
    text-decoration: none;
    color: black;
    font-size: 18px;
    display: block;
}