article, aside, details, figcaption, figure, footer,header,
hgroup, menu, nav, section {
    display: block;
}

body {
    background-color: #F9F9F9;
    font-size: 30px;

}

img {
    max-width: 700px;
}

.item {
    background-color: #FFFFFF;
    color: #242424;
    max-width: 750px;
    margin: 30px auto;
    padding: 40px;
}

.btn-link,
.item_header {
    font-size: 42px;
}

.github_link {
    float: right;
}

.intro {
    background-color: #242424;
    color: white;
    padding: 20px;
}

.description {

}

.btn-link {
    color: #242424;
    text-decoration: none;
}