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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
    margin-left: 220px;
}

header {
    background: #333;
    color: #fff;
    padding: 1rem;
    text-align: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 200px;
    height: 100%;
    overflow-y: auto;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
}

header nav ul {
    list-style: none;
    padding: 0;
}

header nav ul li {
    margin: 0;
}

header nav ul li a {
    display: block;
    padding: 0.5rem;
    color: #fff;
    text-decoration: none;
}

header nav ul li a:hover {
    background: #444;
}

header p {
    margin: 0.5rem 0;
}

header a {
    color: #f4f4f4;
    text-decoration: none;
    font-weight: bold;
}

main {
    padding: 1rem;
}

section {
    background: #fff;
    margin: 1rem 0;
    padding: 1.5rem;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

section h2 {
    margin-bottom: 1.5rem;
}

section h3 {
    margin: 1.5rem 0;
}

section h4 {
    margin: 1.25rem 0;
}

section p {
    margin-bottom: 1.25rem;
}

section div {

    margin-bottom: 1.25rem;
}

pre {
    background: #eee;
    padding: 1.5rem;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

code {
    font-family: 'Courier New', Courier, monospace;
    color: #d14;
}

ul {
    list-style-type: disc;
    padding-left: 1.5rem;
}

ul li {
    margin: 0.5rem 0;
}

ul li a {
    color: #0066cc;
    text-decoration: none;
}

ul li a:hover {
    text-decoration: underline;
}

a {
    color: #0066cc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

#banner_principal {
    background-color: #333;
    color: #fff;
    padding: 50px;
    text-align: center;
    border-bottom: 5px solid #555;
}

#banner_principal h1 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

#banner_principal h1 strong {
    color: #fff;
}

#banner_principal p {
    font-size: 1.2rem;
    line-height: 1.4;
    margin: 0;
}

#codeInput {
    width: 100%;
    height: auto;
    margin-bottom: 1.5rem;
    padding: 10px;
    font-family: monospace;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 5px;
    overflow: hidden;
    resize: none;
}


btn {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background-color: #444;
    color: white;
}

#runButton {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background-color: #d14;
    color: white;
}