body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

header {
    background-color: #3f51b5;
    color: white;
    padding: 20px;
    text-align: center;
}

nav {
    background-color: #f5f5f5;
    padding: 15px;
}

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

nav ul li {
    display: inline;
    margin-right: 10px;
}

nav ul li a {
    color: #3f51b5;
    text-decoration: none;
}

main {
    padding: 20px;
}

footer {
    background-color: #3f51b5;
    color: white;
    text-align: center;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
}

h2, h3 {
    color: #3f51b5;
}

a {
    color: #3f51b5;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
}