body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(to bottom right, #000000, #333333);
    color: #ffffff;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    font-size: 3em;
    margin-bottom: 0.2em;
    animation: slideIn 1s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

h2 {
    font-size: 1.5em;
    margin-top: 0;
    margin-bottom: 1em;
}

.content {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 8px;
}

.content p {
    line-height: 1.5;
}

.popup-link {
    color: #f0c419;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

.popup-link:hover {
    color: #ffea00;
}

.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 999;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.popup {
    position: relative;
    max-width: 80%;
    max-height: 80%;
    padding: 20px;
    background-color: #ffffff;
    border-radius: 8px;
    text-align: center;
    overflow: auto;
}

#popup-image {
    max-width: 100%;
    max-height: 100%;
    border-radius: 8px;
}

#close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 8px 16px;
    background-color: #f0c419;
    color: #000000;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#close-btn:hover {
    background-color: #ffea00;
}