body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #ff0000;
}

nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    margin: 0;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    text-decoration: none;
    color: white;
    padding: 10px 20px;
    display: block;
}

nav ul li a.active,
nav ul li a:hover {
    background-color: #cc0000;
}

main {
    text-align: center;
    padding: 20px;
}

.services {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.service {
    text-align: center;
    margin: 20px;
    flex: 1 1 200px;
}

.service img {
    max-width: 100%;
    height: auto;
}

.service h2 {
    font-size: 1.5em;
    margin: 10px 0;
}

.service p {
    font-size: 1em;
}