/* Reset some default styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fafafa;
    padding-top: 80px;
    /* space for fixed header */
}

/* Container */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px 40px;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: #fff;
    border-bottom: 1px solid #eaeaea;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

header .container {
    padding: 20px 0;
    text-align: center;
}

header h1 {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 5px;
}

header p {
    font-size: 14px;
    color: #666;
}

/* Sections */
section {
    margin-bottom: 40px;
}

section h2 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #111;
}

section h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #222;
}

section h4 {
    font-size: 16px;
    margin-bottom: 8px;
    color: #333;
}

section p {
    margin-bottom: 15px;
    font-size: 15px;
    line-height: 1.7;
    color: #444;
}

section ul {
    font-size: 15px;

    margin-left: 20px;
    margin-bottom: 15px;
}

section ul li {
    font-size: 15px;

    margin-bottom: 8px;
}

/* Links */
a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 600px) {
    header h1 {
        font-size: 26px;
    }

    header p {
        font-size: 12px;
    }

    section h2 {
        font-size: 20px;
    }

    section h3 {
        font-size: 16px;
    }

    section h4 {
        font-size: 14px;
    }

    section p {
        font-size: 14px;
    }
    section ul li{
        font-size: 14px;
    }
}

ol {
    padding-left: 20px;
    /* space between numbers and text */
    margin-left: 0;
    /* remove extra margin from browser */
    list-style-position: inside;
    /* numbers appear inside the content box */
}