div {
    max-width: 400px;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.left {
    max-width: 800px;
    text-align: left;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    html {
        font-size: 24px;
    }

    div {
        max-width: 600px;
    }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
    position: relative;
    min-height: 100%;
}

img {
    margin-top: 40px;
    margin-bottom: 40px;
}

/* General settings */
body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f9;
    margin: 20px;
}

/* Header styling */
h1, h2, h3 {
    color: #2c3e50;
    margin-top: 20px;
    margin-bottom: 10px;
    padding-bottom: 5px;    
}

/* Paragraph styling */
p {
    margin-bottom: 20px;
}

/* Specific header styles */
h1 {
    font-size: 1.2em;
    font-weight: bold;
}

h2 {
    font-size: 1em;
    font-weight: bold;
}

h3 {
    font-size: 1em;
    font-weight: bold;
}

/* Text formatting within paragraphs */
p strong {
    font-weight: bold;
}

p em {
    font-style: italic;
}

p a {
    color: #3498db;
    text-decoration: none;
}

p a:hover {
    text-decoration: underline;
}

/* Blockquote styling */
blockquote {
    margin: 20px 0;
    padding: 10px 20px;
    background: #ecf0f1;
    border-left: 10px solid #3498db;
}

blockquote p {
    margin: 0;
    font-style: italic;
}

/* List styling */
ul, ol {
    margin: 20px 0;
    padding-left: 40px;
}

li {
    margin-bottom: 10px;
}