body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1em;
    background-color: #0277BD;
    color: white;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1em;
}

nav ul li {
    margin: 0;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

.search-bar input {
    padding: 0.5em;
    border: none;
    border-radius: 4px;
}

.banner img {
    width: 100%;
    height: auto;
}

.course-recommendations {
    padding: 2em;
}

.course {
    background-color: #f4f4f4;
    padding: 1em;
    margin-bottom: 1em;
    border-radius: 4px;
}

footer {
    text-align: center;
    padding: 1em;
    background-color: #0277BD;
    color: white;
}