* {
    margin: 0;
    padding: 0;
    line-height: 1.3em;
    overflow: auto;
}

body > * > * {
    margin: 0 auto;
    padding: 1rem;
    max-width: 75rem;
    min-width: 30rem;
}

#top-bar {
    height: 4rem;
    border-bottom: 1px solid #aaa;
    box-shadow: 0 0.5em 0.5em -0.6em #666;
    margin-bottom: 1em;
    overflow: auto;
}

#branding {
    font-size: 2em;
}

header > div:first-child {
    float: left;
}

header > div:last-child {
    float: right;
}

#sidebar {
    width: 30%;
    float: left;
}

.carosel {
    margin-bottom: 1rem;
}
.carosel > div {
    display: inline-block;
    margin: 0 1rem;
    vertical-align: top;
}

.user-pic {
    width: 2em;
    height: auto;
    border-radius: 50%;
    vertical-align: middle;
}

.book-preview {
    overflow: auto;
    margin-bottom: 1em;
}

.book-preview img {
    float: left;
    margin-right: 0.5em;
}

.update {
    border: 1px solid #333;
    border-radius: 0.2rem;
    margin-bottom: 1em;
}

.update > * {
    padding: 1em;
}

.interact {
    background-color: #eee;
}