body {
    margin: 0 auto;
}

header {
    padding: 10px 30px;
    display: flex;
    justify-content: space-between;
}

a {
    text-decoration: none;
    color: blue;
}

header span.link-icon {
    width: 200px;
}
header span.link-doc {
    padding-top: 10px;
    font-size: 16px;
}
header span.link-lang {
    padding-top: 10px;
    font-size: 14px;
    width: 200px;
    text-align: right;
}

main {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 30px;
    font-size: 14px;
}

h1 {
    font-size: 19px;
    font-weight: normal;
}

footer {
    width: 100%;
    height: 2em;
    color: #fff;
    font-size: 14px;
    text-align: center;
    background-color: #0557cc;
    margin-top: 50px;
    padding-top: 10px;
}