.course-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
    align-content: start;
    align-items: start;
    flex: 1;
}

.course-grid div {
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.2);
    background-size: cover;
    background-position: center;
    border-radius: 10px;
    height: 150px;
    overflow: hidden;
    cursor: pointer;
    transition: box-shadow 0.5s ease, background-color 0.5s ease, filter 0.5s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    text-align: center;
    background-color: #fff;
}

.course-grid div:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    background-color: #f9f8f8;
}

.course-grid h3 {
    margin: 0;
    font-size: 18px;
    margin-bottom: 10px;
}

.course-grid p {
    margin: 0;
    font-size: 14px;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .course-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 20px;
        max-width: 100%;
        margin: 0;
    }

    .course-grid div {
        border-radius: 10px;
        margin: 0;
    }
}