body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-image: url('images/pablo.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

header {
    background-color: #0044cc;
    color: white;
    text-align:center;
    padding: 1rem;
}

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

header nav ul li {
    display: inline;
    margin: 0 15px;
}

header nav ul li a {
    color: white;
    text-decoration: none;
}

main {
    padding-left: 2rem;
    text-align: left;
}

section {
    text-align:left;
    background-color:rgba(255,255,255,0.75);
    padding-left: 2rem;
    margin-left:5%;
}

footer {
    background-color: #222;
    color: white;
    text-align: center;
    padding: 1rem 0;
    position: fixed;
    bottom: 0;
    width: 100%;
}