body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 20px;
}
header, footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 10px 0;
}
h1, h2, h3 {
    color: #2c3e50;
}
h1 {
    border-bottom: 2px solid #2c3e50;
    padding-bottom: 10px;
}
h2 {
    border-left: 5px solid #2c3e50;
    padding-left: 10px;
}
.note {
    background-color: #e6ffed;
    border-left: 5px solid #2cbe4e;
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
}
pre {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    border: 2px solid #2c3e50;
}
table, th, td {
    border: 1px solid #2c3e50;
}
th, td {
    padding: 10px;
    text-align: left;
}
th {
    background-color: #f2f2f2;
}
details {
    background-color: #f9f9f9;
    padding: 10px;
    border: 2px solid #2c3e50;
    border-radius: 5px;
    margin: 10px 0;
}
summary {
    font-weight: bold;
    cursor: pointer;
}