base.css

@charset "utf-8";
@namespace epub "http://www.idpf.org/2007/ops";

body {
    margin: 5%;
    font-size: medium;
    hyphens: auto;
    -epub-hyphens: auto;
}

code {
    font-family: monospace;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-variant: small-caps;
    hyphens: none;
    -epub-hyphens: none;
    page-break-after: avoid;
    text-align: center;
    margin: 1.5em 0;
}

blockquote+p,
blockquote p:first-child,
h2+p,
h3+p,
header+p,
hr+p>ol>li>p:first-child {
    text-indent: 0;
}

ol.toc {
    padding: 0;
    margin-left: 1em;
}

ol.toc li {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

hr {
    border: none;
    border-top: 1px solid;
    height: 0;
    margin: 1.5em auto;
    width: 25%;
}

cite {
    font-style: normal;
}

abbr {
    border: none;
    white-space: nowrap;
}

blockquote cite {
    display: block;
    font-style: italic;
    text-align: right;
}

blockquote cite i {
    font-style: normal;
}

a {
    hyphens: none;
    -epub-hyphens: none;
}

blockquote p {
    font-style: italic;
    text-align: left;
    text-indent: 0;
}

blockquote p span {
    display: block;
    padding-left: 1em;
    text-indent: -1em;
}

blockquote br {
    display: none;
}

h1 {
    font-size: 1.8em;
}

h2 {
    font-size: 1.4em;
}

h3 {
    font-size: 1.25em;
}

pre,
tt,
code,
samp,
kbd {
    font-family: "Courier New", Courier, monospace;
    word-wrap: break-word;
    font-size: 0.8em;
}

pre {
    line-height: 1.2em;
    margin-left: 1em;
    margin-bottom: 1em;
    white-space: pre-wrap;
    display: block;
}

img {
    display: block;
    margin: 0 auto;
    border-radius: 0.3em;
    -webkit-border-radius: 0.3em;
    -webkit-box-shadow: rgba(0, 0, 0, 0.15) 0 1px 4px;
    box-shadow: rgba(0, 0, 0, 0.15) 0 1px 4px;
    box-sizing: border-box;
    border: white 0.5em solid;
    
}

p img {
    border-radius: 0;
    border: none;
}

sup {
    vertical-align: super;
    line-height: 0.5em;
}

sub {
    vertical-align: sub;
    line-height: 0.5em;
}