* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 100%;
    text-align: center;
}

h1 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 20px;
}

p {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 20px;
    line-height: 1.6;
}

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

ul li {
    font-size: 1rem;
    color: #555;
    margin-bottom: 10px;
}

ul li ul {
    margin-top: 10px;
    margin-left: 20px;
}

.start-button {
    margin-top: 20px;
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    font-size: 1.1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.start-button:hover {
    background-color: #45a049;
}