body {
    font-family: Arial, sans-serif;
}

nav {
    background-color: whitesmoke;
    overflow: hidden;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    float:left;
}

nav ul li a {
    
    display: block;
    color: black;
    text-align: center;
    padding: 15px 30px;
    text-decoration: none;
    font-family:'Times New Roman', Times, serif;
    color: darkslategrey;
    font-size: 25px;
}

nav ul li a:hover {
    background-color:cornsilk;
}

.section {
    padding: 20px;
}

.center-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin: 20px 0; 
}

.center-content h1,
.center-content p {
    margin: 10px 0; 
}

.course-card{
    text-decoration: none;
}


section#premium-library {
    padding: 20px;
    text-align: center;
    background-color: #fff;
    margin-top: 20px;
}

section#premium-library h1 {
    margin-bottom: 10px;
}

section#course-library {
    padding: 20px;
    text-align: center;
}

.course-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.course-card {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    width: 250px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: left;
    padding: 15px;
}

.course-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.course-card .label {
    background-color: orange;
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    display: inline-block;
    margin-bottom: 10px;
}

.course-card h2 {
    margin: 0 0 10px;
}

.course-card p {
    color: #555;
    margin: 0 0 15px;
}

.course-card button {
    background-color: #28a745;
    border: none;
    color: white;
    padding: 10px;
    width: 100%;
    cursor: pointer;
}

.course-card button:hover {
    background-color: #218838;
}



.price {
    font-size: 1.2em;
    color: #d9534f;
}

.original-price {
    text-decoration: line-through;
    color: #6c757d;
}

.discount {
    color: #28a745;
}