body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #f4f4f4;
}

header {
    background-color: #007ACC;
    color: white;
    width: 100%;
    padding: 1rem;
    text-align: center;
}

main {
    max-width: 800px;
    margin: 2rem;
    padding: 2rem;
    background: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

h1,
h2,
h3 {
    color: #333;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    margin-top: 1.5rem;
}

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

ul.features {
    padding-left: 1rem;
}

ul.features li {
    margin: 0.5rem 0;
    display: flex;
    align-items: flex-start;
    background-color: #e9f5fc;
    border-left: 4px solid #007ACC;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

ul.features li strong {
    margin-right: 0.5rem;
}

ul.features li:before {
    content: "\f00c";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    margin-right: 0.5rem;
    color: #007ACC;
}

a {
    text-decoration: none;
    color: white;
    background-color: #007ACC;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    margin-top: 1rem;
    display: inline-block;
}

a:hover {
    background-color: #005F9E;
}