.lesson-box {
    background: #fff;
    padding: 15px;
    margin-top: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    font-family: Arial, sans-serif;
    border: none;
}

.weekend {
    color: #28a745;
    font-weight: bold;
}