styles.css

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
}

.navbar {
    background: #333;
    color: #fff;
    padding: 15px;
}

.navbar-container {
    display: flex;
    justify-content: space-around;
}

.nav-link {
    color: #fff;
    text-decoration: none;
}

.tooltip {
    visibility: hidden;
    width: 120px;
    background-color: #555;
    color: #fff;
    text-align: center;
    padding: 5px 0;
    border-radius: 6px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
}

.nav-link:hover .tooltip {
    visibility: visible;
    opacity: 1;
}

.container {
    margin: 20px;
}

.content-container {
    margin-bottom: 20px;
}

.thumbnail {
    width: 100px;
    height: 100px;
}