body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #fff;
    color: #333;
}

header {
    background-color: #18A392;
    color: #fff;
    text-align: center;
    padding: 20px 0;
}

header .logo img {
    max-width: 200px;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 40px;
}

h1, h2 {
    font-weight: bold;
}

h1 {
    font-size: 2.5em;
}

h2 {
    font-size: 2em;
    color: #167A91;
}

a {
    color: #167A91;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

footer {
    background-color: #83BD43;
    color: #fff;
    text-align: center;
    padding: 10px 0;
}

.photo img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border: 5px solid #167A91;
}