body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2rem;
}

header p {
    margin: 0;
    font-size: 1.2rem;
}

main {
    padding: 2rem;
}

.command-section {
    margin-bottom: 2rem;
}

.command-section h3 {
    color: #333;
    font-size: 1.5rem;
}

.command-section p {
    font-size: 1.1rem;
}

.command {
    color: red;
    font-weight: bold;
    font-size: 1.2rem;
}

.example {
    color: blue;
    font-style: italic;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem 0;
}

hr {
    border: 1px solid #ccc;
    margin: 2rem 0;
}

.door-codes {
    background-color: #fff;
    padding: 1rem;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.code-category {
    margin-bottom: 2rem;
}

.code-category h3 {
    color: #333;
    font-size: 1.5rem;
}

.flex-list {
    list-style-type: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
}

.flex-list li {
    margin-bottom: 0.5rem;
    width: 45%;
    margin-right: 5%;
}

.contact {
    background-color: #fff;
    padding: 1rem;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    margin-top: 2rem;
}

.contact p {
    margin: 0.5rem 0;
}

footer {
    background-color: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
    position: relative;
    bottom: 0;
    width: 100%;
    margin-top: 2rem;
}

footer p {
    margin: 0.5rem 0;
}

.footer-title {
    font-size: 1.2rem;
    font-weight: bold;
}