body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f5f5eb;
}

h1 {
    color: #5b7c7b;
}

h2 {
    color: #d77c7c;
}

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

ul li {
    cursor: pointer;
    color: #5b7c7b;
    margin: 10px 0;
    font-size: 1.2em;
}

ul li:hover {
    text-decoration: underline;
}

#popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff8e1;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 5px 5px 15px rgba(0, 0, 0, 0.3);
    display: none;
    text-align: center;
}

#popup img {
    width: 200px;
    height: auto;
}

#close {
    position: absolute;
    top: 5px;
    right: 10px;
    cursor: pointer;
    font-size: 18px;
    color: #d77c7c;
}

.hidden {
    display: none;
}