body {
    font-family: Arial, sans-serif;
    background-color: #f8f9fa;
    margin: 0;
    padding: 0;
}

#navbar {
    margin-bottom: 20px;
}

#btnDiv,
#searching,
#addCourseButtonContainer {
    display: flex;
    justify-content: center;
    margin: 10px 0;
}

#btnDiv button,
#addCourseButtonContainer button {
    margin: 0 10px;
    padding: 10px 20px;
    background-color: #007bff;
    border: none;
    color: white;
    cursor: pointer;
    border-radius: 5px;
}

#btnDiv button:hover,
#addCourseButtonContainer button:hover {
    background-color: #0056b3;
}

#courseContainer {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding: 20px;
}

#courseContainer div {
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 20px;
    width: 300px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

#courseContainer img {
    max-width: 100%;
    height: auto;
    display: block;
    margin-bottom: 10px;
}

#courseContainer h3,
#courseContainer h4,
#courseContainer p {
    margin: 10px 0;
}

#searching input {
    width: 300px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#searching button {
    padding: 10px 20px;
    border: none;
    background-color: #28a745;
    color: white;
    cursor: pointer;
    border-radius: 5px;
}

#searching button:hover {
    background-color: #218838;
}