article {
    line-height: 1.7em;
}

article h1 {
    margin: 20px 0px;
}

article h2 {
    margin: 50px 0px 15px 0px;
}

article h3 {
    margin: 30px 0px 15px 0px;
}

article code {
    border: 1px solid rgba(128,128,128,0.4);
    border-radius: 3px;
    background: rgba(128,128,128,0.1);
    padding: 1px 3px;
}