body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: url('images/d.png') no-repeat center center fixed;
    background-size: cover;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    overflow: hidden;
}
.scroll-container {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-y: auto;
}
.container {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    padding: 20px;
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
    margin: 20px;
}
h1, h2 {
    text-align: center;
    margin: 20px 0;
}
h1 {
    font-size: 2.5em;
    color: black;
    margin-top: 0;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    padding: 10px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    word-wrap: break-word;
}
h1::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, transparent, white, transparent);
    animation: shine 3s infinite;
}
@keyframes shine {
    from {
        left: -100%;
    }
    to {
        left: 100%;
    }
}
h2 {
    font-size: 1.5em;
    color: #555;
    padding: 10px;
    background: rgba(240, 240, 240, 0.8);
    border-radius: 5px;
    margin-bottom: 10px;
}
p {
    font-size: 1em;
    line-height: 1.6;
    color: #666;
    text-align: center;
    padding: 15px;
    background: rgba(240, 240, 240, 0.6);
    border-radius: 5px;
    margin-bottom: 20px;
}
hr {
    border: 0;
    height: 1px;
    background: #ddd;
    margin: 20px 0;
}
iframe {
    width: 100%;
    height: 400px;
    border: none;
    margin: 20px 0;
}
.button-container {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}
button {
    padding: 10px 20px;
    font-size: 16px;
    background: linear-gradient(to right, #ff7e5f, #feb47b);
    border: none;
    border-radius: 5px;
    color: white;
    cursor: pointer;
}
button:hover {
    background: linear-gradient(to right, #feb47b, #ff7e5f);
}
@media (max-width: 768px) {
    h1 {
        font-size: 2em;
        white-space: normal;
        word-wrap: normal;
    }
    h2 {
        font-size: 1.2em;
    }
    p {
        font-size: 0.9em;
    }
    iframe {
        height: 300px;
    }
}