*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 20px;
    background-color: #f4f4f4;
    color: #333;
}
.container {
    max-width: 900px;
    margin: auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
h1, h2, h3 {
    color: #2c3e50;
}
h1 {
    text-align: center;
    margin-bottom: 30px;
}
strong {
    color: #e74c3c;
}
ul {
    list-style-type: disc;
    margin-left: 20px;
}
ol {
    list-style-type: decimal;
    margin-left: 20px;
}
code {
    background-color: #eee;
    padding: 2px 4px;
    border-radius: 4px;
}
.note {
    background-color: #ecf0f1;
    border-left: 5px solid #3498db;
    padding: 15px;
    margin: 20px 0;
    border-radius: 4px;
}