body {
    font-family: "Roboto", sans-serif;
    margin:0;
    padding: 0;
}
header {
    background-color: #263238;
    height: 100px;
    width: 100%;
    position: fixed;
}

#header-content, section {
    padding:20px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

section {
    padding-top: 100px;
}