body {
    background-color: #f4f7f8;
    color: #1c2a33;
    font-family: Arial, sans-serif;
    font-size: 17px;
    line-height: 1.6;
    margin: 0;
}

header {
    background-color: #1f6f8b;
    color: white;
    text-align: center;
    padding: 20px;
}

header h1 {
    margin: 0 0 10px 0;
    font-family: Georgia, serif;
}

nav a {
    color: white;
    margin: 0 12px;
}

main {
    width: 90%;
    max-width: 700px;
    margin: 0 auto;
}

.intro {
    text-align: center;
    margin: 30px 0;
}

img {
    width: 100%;
    margin-bottom: 15px;
}

h2 {
    font-family: Georgia, serif;
    color: #1f6f8b;
    margin-top: 40px;
}

li {
    margin-bottom: 10px;
}

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

footer {
    text-align: center;
    color: #7b8a94;
    border-top: 1px solid #cfdbe0;
    margin-top: 40px;
    padding: 20px;
}