html {
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

body {
    background-color: lightgrey;
    padding-left: 15%;
    padding-right: 15%;
}
code {
    background-color: lightgrey;
}
header {
    text-align: center;
    padding-top: 25px;
    padding-bottom: 50px;
}

.author {
    padding-left: 6%;
}

.thumbnail {
    max-height: 100px;
    text-align: center;
    cursor: pointer;
}

figcaption {
    text-align: left;
    font-size: 12px;
}

figcaption.short-caption {
    text-align: center;
}

.col-md-4,
.col-sm-4,
.col-xs-12 {
    text-align: center;
}

.btn-link {
    position: relative;
    opacity: 0.8;
    transition: 0.3s ease;
}

.btn-link:hover {
    transform: scale(1.5, 1.5); /** default is 1, scale it to 1.5 */
    opacity: 1;
}

footer {
    text-align: right;
}