body {
    margin: 0;
    background-color: #111;
    color: #fff;
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}
.container {
    background-color: #222;
    border-radius: 12px;
    padding: 30px 40px;
    margin-top: 40px;
    text-align: center;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
}
img {
    width: 600px;
    height: auto;
    display: block;
    margin: 0 auto;
}
img + img {
    margin-top: 20px;
}
p {
    margin-top: 20px;
    font-size: 1.2rem;
}
a.next {
    display: inline-block;
    margin-top: 30px;
    font-size: 2rem;
    color: #fff;
    text-decoration: none;
    background-color: #444;
    padding: 10px 30px;
    border-radius: 8px;
    transition: background 0.2s;
}
a.next:hover {
    background-color: #666;
}
ul {
    text-align: left;
    margin-top: 10px;
    padding-left: 20px; /* space for bullets */
}
.home-btn {
    position: fixed;   /* stays in the corner even when scrolling */
    top: 20px;
    left: 30px;
    display: inline-block;
    transition: filter 0.2s;
    z-index: 1000;     /* ensures it’s above other content */
}
.home-btn img {
    width: 70px;
    height: auto;
}
.home-btn:hover {
    filter: grayscale(100%);
}