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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
}

h1 {
    color: #2c3e50;
    margin-bottom: 20px;
    text-align: center;
}

h2 {
    color: #34495e;
    margin: 25px 0 15px;
    padding-bottom: 5px;
    border-bottom: 2px solid #3498db;
}

h3 {
    color: #2980b9;
    margin: 20px 0 10px;
}

p {
    margin-bottom: 15px;
}

a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #2980b9;
    text-decoration: underline;
}

code {
    background-color: #333;
    color: #fff;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'Courier New', Courier, monospace;
    display: inline-flex;
    align-items: center;
}

.copy-btn {
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 0 3px 3px 0;
    padding: 2px 8px;
    font-size: 12px;
    cursor: pointer;
    margin-left: 5px;
    height: 100%;
}

.copy-btn:hover {
    background-color: #2980b9;
}
hr {
    border: none;
    border-top: 1px solid #ddd;
    margin: 20px 0;
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    h1 {
        font-size: 1.8em;
    }
    h2 {
        font-size: 1.5em;
    }
    h3 {
        font-size: 1.2em;
    }
}