body {
    font-family: Arial, sans-serif;
    margin-left: 35px;
    padding: 0;
}

header {
    background-color: #f8f8f8;
    text-align: center;
    padding: 20px;
}

.logo {
    max-width: 200px;
}

nav {
    background-color: #333;
    color: #fff;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

nav ul li {
    float: left;
}

nav ul li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

nav ul li a:hover {
    background-color: #111;
}

main {
    padding: 20px;
}

.service-content {
    display: none;
}

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

footer {
    bottom: 0;
    color: #707070;
    height: 2em;
    left: 0;
    position: relative; 
    font-size: small;
    width:100%;
}