body {
    font-family: Arial, sans-serif;
    background: #f6f6f6;
    display: flex;
    margin: 0;
}

.sidebar {
    width: 220px;
    background: #ffffff;
    padding: 20px;
    height: 100vh;
    box-shadow: 3px 0 10px rgba(0,0,0,0.1);
    position: fixed;
}

.sidebar h2 {
    margin-bottom: 15px;
    font-size: 22px;
}

.sidebar ul {
    list-style: none;
    padding-left: 0;
}

.sidebar li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
    font-size: 16px;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 10px;
    width: 350px;
    text-align: center;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
    margin-left: 260px;  /* Push container right to make room for sidebar */
    margin-top: 50px;
}

button {
    margin-top: 15px;
    padding: 10px 20px;
    background: #0078ff;
    border: none;
    color: white;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #005fcc;
}

#preview img {
    margin-top: 20px;
    width: 200px;
    border-radius: 10px;
}