#jumbotron {
    width: 100%;
    height: 33.33vh;
}
body, html {
    margin: 0;
}
.container {
    width: 100%;
    max-width: 960px;
    margin: auto;
    display: flex;
    flex-flow: row wrap;
    padding: 0 16px;
    height: 96.6vh;
    overflow: visible;
}

.thumbnail {
    margin-right: 1em;
    margin-bottom: 1em;
    width: 256px;
    transition: 0.15s ease;
}

.thumbnail:hover {
    transform: scale(1.05);
}

.thumbnail img {
    width: 256px;
    height: 256px;
    margin: 0;
}

.thumbnail h1 {
    line-height: 1.0;
    text-align:  left;
    font-weight: 400;
    font-size: 1em;
    margin: 0;
}

/* Target iOS devices specifically */
@media only screen and (max-width: 768px) {
 #jumbotron {
    display: none;
 }
 .nav {
    display: none;
 }
}


/* EREADER STYLING */

.nav {
    position: fixed;
    top: 24px;
    left: 24px;
    background: #fff;
    padding: 8px 16px 8px 24px;
    z-index: 99;
}
.nav::before {
    content: "<";
    position: absolute;
    top: 50%;
    left: 8px;
    transform: translateY(-50%);
}

.ereader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw; /* Full viewport width */
    height: 88.89vh; /* Full viewport height */
}